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IntroductionData
Empirical AnalysisConclusionAppendix
Divide and Rule or the Rule of the Divided?
Stelios Michalopoulos and Elias Papaioannou
Tufts University and Dartmouth College and CEPR
July 2010
NBER SI - Income Distribution and Macroeconomics
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Ethnic Homelands before Colonization - Murdock 1959
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Pre-Colonial Institutions across Ethnicities
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Berlin Conference Partitioned Africa Among ColonizersStelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
The Design of African Borders
Berlin Conference 1884/1885 and subsequent treaties among Europeans in1890s
Colonizers had not even explored most of Africa when borders were agreed.
No ethnicity-speci�c measure predicts which ethnicities were partitioned (see
appendix)
Drawing involved protectorates, large (free-trade) areas, and spheres ofin�uence rather than potential states.
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Upon African independence these
borders were respected creating
the boundaries of African states
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Ü
Rule of Law Across African Countries 19962004
Rule of Law 199620041.912 1.459
1.459 0.877
0.877 0.294
0.294 0.287
0.287 0.708
Current National Institutions
across African Countries
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Questions
What are the Determinants of Regional Developmentwithin Africa?
1 Do contemporaneous nationwide institutions a¤ect regionaleconomic performance across African states?
2 Do pre-colonial local institutional arrangements a¤ectcontemporary regional economic performance within Africa?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Questions
What are the Determinants of Regional Developmentwithin Africa?
1 Do contemporaneous nationwide institutions a¤ect regionaleconomic performance across African states?
2 Do pre-colonial local institutional arrangements a¤ectcontemporary regional economic performance within Africa?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Related Literature
1 Importance of National Contemporary Institutions(Acemoglu et al. 2001, 2002; La Porta et al. 1998, 1999)
Colonization (type or/and identity)Persistence
2 Fundamental Role of Local Precolonial Institutions(Herbst (2000); Gennaioli and Rainer (2006, 2007))
Limited penetration of nationwide institutions (poor infrastructure)Colonization limited (in duration and regions)
Long-run persistence of historical features and inequality(e.g. Guiso et al. 2008; Huillery, 2009; Banerjee and Iyer, 2005; Iyer, 2010; Dell,
2010; Acemoglu et al. 2008)
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Related Literature
1 Importance of National Contemporary Institutions(Acemoglu et al. 2001, 2002; La Porta et al. 1998, 1999)
Colonization (type or/and identity)Persistence
2 Fundamental Role of Local Precolonial Institutions(Herbst (2000); Gennaioli and Rainer (2006, 2007))
Limited penetration of nationwide institutions (poor infrastructure)Colonization limited (in duration and regions)
Long-run persistence of historical features and inequality(e.g. Guiso et al. 2008; Huillery, 2009; Banerjee and Iyer, 2005; Iyer, 2010; Dell,
2010; Acemoglu et al. 2008)
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Other Explanations
Border Design - State Arti�ciality (Englebert, Tarrango, and Carter (2002);Alesina, Easterly, and Matuszeski (2010))
Slavery (Nunn, 2008)
Geography-Health (Je¤ Sachs)
Ethnic Fragmentation/Polarization (e.g. Easterly and Levine 1997, Alesina etal. 2003)
Human Capital (e.g. Glaeser et al. 2004)
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
National Institutions and Development
1. Partitioning => identical cultures subjected to di¤erent countrywidearrangements
Documenting Partitioned Ethnicities (see appendix for a complete list):
2 countries: Anyi (Ghana (58%) and the Ivory Coast (42%);
3 countries: Chewa (Mozambique (50%), Malawi (34%), and Zimbabwe (16%))
Use partitioned ethnic groups to exploit within-ethnicityacross-country variation in institutional performance
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
African History through MapsResearch QuestionLiteratureIdenti�cation
Ethnic Institutions and Development
2. Exploit within-country across-ethnicity variation in tribalpre-colonial institutional traits
Account for post-independence national characteristics and countrylevel unobservables
E¤ectively control for local geography
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Satelite Light Density Data: Merits
signi�cant problems on cross-country African GDP data(measurement; unvailability; shadow economy)
paucity of high resolution regional data on development
Satellite Light Density: available at a very �ne grid (around 0.8 kmx 0.8 km)
strong correlation with income and consumption both across andwithin countries (Henderson, Storeygard, and Weil, 2009)
light density => proxy for public goods provision
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Satelite Light Density Data: Merits
signi�cant problems on cross-country African GDP data(measurement; unvailability; shadow economy)
paucity of high resolution regional data on development
Satellite Light Density: available at a very �ne grid (around 0.8 kmx 0.8 km)
strong correlation with income and consumption both across andwithin countries (Henderson, Storeygard, and Weil, 2009)
light density => proxy for public goods provision
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Light Density and Income across Africa
MoroccoLibya
Angola
Botswana
Benin
Burundi
Chad
Congo (Democratic Republic of the)
Cameroon
ComorosCentral Af rican Republic
Djibouti
Egypt
Equatorial Guinea
Ethiopia
The Gambia
Gabon
GhanaCote D'Ivoire
KenyaLiberia
Lesotho
Madagascar Malawi
Mali
Mozambique
Niger
Nigeria
GuineaBissauRwanda
South Africa
Sierra Leone
SomaliaSudan
Togo
Tunisia
Tanzania
UgandaBurkina Faso
Swaziland
Zambia
Algeria
Republic of Congo
Guinea
Senegal
Mauritania
Zimbabwe
Namibia
56
78
9Lo
g (G
DP
per
Cap
ita in
200
0)
6 4 2 0 2Log (1 + Average Light Density in 20072008)
Unconditional RelationshipLight Density and Income Per Capita Across African Countries
Unconditional Correlation
Morocco
Libya
Angola
Botswana
Benin
Burundi
Chad
Congo (Democratic Republic of the)
Cameroon
Comoros
Central African Republic
Djibouti
Egypt
Equatorial Guinea
Ethiopia
The Gambia
Gabon
GhanaCote D'Ivoire
Kenya
Liberia
Lesotho
MadagascarMalawi
Mali
Mozambique
Niger
Nigeria
GuineaBissau
Rwanda
South Africa
Sierra Leone
SomaliaSudan
Togo
Tunisia
Tanzania
UgandaBurkina Faso
Swaziland
Zambia
Algeria
Republic of Congo
Guinea
Senegal
Mauritania
Zimbabwe
Namibia
21
01
2Lo
g (G
DP
per
Cap
ita in
200
0)2 1 0 1 2 3
Log (1 + Average Light Density in 20072008)
Conditional on Population Density
Light Density and Income Per Capita Across African Countries
Conditioning on Pop. Dens.
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Light Density and Infant Mortality Across African Regions
Central
Congo, Dem. Rep. Of
Região Capital
Região OesteRegião Centro SulRegião EsteNorthWestern
NortheastNorthwest
Região SulWestern
Região Norte
Congo
Cyangugu
Butare
Burundi
Kibungo
Kigali Rurale
Lake
Mono
Atlantique
Zou
Marities
Borgou
Central Tillaberi (inc. Niamey)
South West
AtacoraSavanes Dosso
Oueme
North West
CentralePlateauxKaraEast Mopti
Upper EastGao/Kidal/Tombouctou
Upper West Segou
North
Sikasso
Northern
Côte d'Ivoire
Central/South & OuagadougouWest
South EastSouthNorth EastNorthern Cape
Southern
KgalagadiNorth West
Ghanzi
Matabeleland North
Central Kweneng
Matabeleland South
Northern Province
KgatlengNorth WestSouthern
RS V
RS II
RS IS.Darfur
RS IV
Central, South, & East
Chad
RS III
North/ Extreme north/Adamaoua
Bangui
W. Darfur
Western
BrongAhafo
LiberiaUpper Guinea
Forest Guinea
Northwest & southwest
South East
North East
West & littoral
Equatorial Guinea
Nord
Luapula
Copperbelt
Central
Sud
Est
Anjouan
Grande Comore
Moheli
Cape Verde
North/West
Debubawi Keih Bahri
Djibouti
Affar
Tunisia
CentreEst
Sud
Zone Nord (G3)
Libya
OuestOriental
Tahoua/Agadez
SudCentreSud
Ismailia
Red Sea
New Valley
Assyout
PortSaid
North Sina
Giza
Red Sea
Kafr ElShKalyoubia
DamiettaDakahlia
QuenaFayoumNorthern
Alexandria
Aswan
Menoufia
Cairo
BeniSuet
South Sina
Nile River
MeniaGharbia
Suez
SharkiaSuhagBehera
Matrouh
Anseba
Maekel
Gadaref
Kassala
TigrayDebub
GashBarkaSemenawi Keih Bahri
Spain
NordOuest
Addis
Rift Valley
North EasternSomali
Oromiya
Harari
Gambela
Dire Dawa
Amhara
BenGumz
SNNPNorth/East
Blue Nile
Central/South
Eastern
Sinnar
Ouest (inc. Libreville)
CentralAshanti
Greater Accra
EasternVolta
GuineaBissau
Lower Guinea
Central Guinea
Koulikoro (inc. Bamako)
Sierra Leone
Conakry
Sud
NordEstKayes
MacCarthy Island
Brikama
Kerewan
Banjul
Mansakonko
Centre
Basse
Coastal
Nyanza
Nairobi
Northern
Northern Highlands
Central Coast
WesternEastern
N.Darfur
Eastern CapeKwaZulu Natal
Lesotho
Free State
CentreTensiftCentreNord
Antananarivo
Mahajanga
Antsiranana
Toliary
Fianarantsoa
ToamasinaZone Sud (G1)
Zone Centre (G4)
Zone Fleuve (G2)
Sofala
Cabo DelgadoZambezia
Mashonaland Central
Manicaland
SouthInhambane
Masvingo
Southern
Eastern
Central
Niassa
Mashonaland East
Swaziland
Gaza
Mpumalanga
Lusaka
TeteNampula
Maputo Cidade
Manica
Maputo province
North
NouakchottMauritius
Northern
Southern Highlands MaradiZinda/Diffa
Western
Umutara
Gitarama
Kibuye
Kigali Ville (PVK)
Gisenyi
Ruhengeri
Byumba
W. Kordofan
N.Kordofan
White Nile
KhartoumGazira
S.Kordofan
OuestSao Tome and Principe
Seychelles
Central
Central
Western Cape
Gauteng
Mashonaland West
Midlands
Harare
Bulawayo
64
20
24
Log
Ligh
t Den
sity
With
in a
n Af
rican
Reg
ion
100 50 0 50 100Infant Mortality per African Region
Conditional on Population Density
Infant Mortality and Light Density Across African Regions
Conditioning on Pop. Dens.
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Data on Geography
Distance of the centroid of each ethnic group (in each country forpartitioned ethnicities) to the capital city.
Distance of the centroid of each ethnic group to the sea coast
Land area of each ethnic region in each country
Land area under water (rivers, lakes, other streams)
Elevation (Ruggedness)
Land suitability for agriculture
Population density in 2000
Malaria Stability Index
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Other Controls
Natural resources
Diamond mine indicator
Petroleum/oil �eld indicator
Early development indicators
Major city in 1400
Also experiment with historical population density and the size ofprecolonial settlements
Border Indicator
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
How to Proxy for Regional African Development?Regional Data (Country-Ethnicity)Country Characteristics
Measures of National Institutional Development
World Bank�s Governance Indicators
Rule of Law Composite Index
Control of Corruption Composite Index
Caveats
experiment with alternative measures (ICRG risk of expropriation; Polity�s
executive constraints index; legal formalism, etc.)
results similar; unbundling institutions outside the scope of the current analysis
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Current National Institutions and Regional Development
Do contemporaneous nationwide institutions a¤ect regionaleconomic performance across African states?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Empirical Speci�cation
yi ;c = a0 + IQLc + X 0i ;c�+ �PDi ;c + f (GEOi ;c ) + [aj + ai ] + "i ;c (1)
yi ;c : log light density at night of ethnic group i in country c .
PDi ;c : log population density of ethnic group i in country c .
IQLc : institutional quality of country c .
f (GEOi ;c ) : (regression discontinuity type) cubic polynomial indistance to the capital city and distance to sea coast (Dell, 2009).Xi ;c : vector of control variables.
aj : ethnic family �xed-e¤ects (Murdock (1959); 96 ethnic clusters)
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Technical Remarks
Estimation:
Signi�cant fraction (around 30%) of the observations on regionaldevelopment takes on the value of zero.
Besides OLS we report Tobit estimates.
Inference:
"Standard" heteroskedasticity-adjusted standard errors unreliable.
Report double clustered s.e. with clustering at the country-level andat the ethnic family level (Cameron, Gelbach, and Miller (2006))
1 Account for repeated observations (Moulton, 1986); also correlation ofprecolonial institutions among ethnic families.
2 Account for spatial correlation.
Conley�s (1999) method yields similar (and if anything smaller) s.e.
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Cross-Ethnic Group Analysis
(1) (2) (3) (4)
Rule of Law 0.1169** 0.1321*** 0.0651*** 0.0596**(0.0465) (0.0500) (0.0214) (0.0270)
adjusted R 2 0.153 0.241 0.521 0.528
Log Population Density Yes Yes Yes YesRD Geographic Polynomial No Yes Yes YesEthnic Family Fixed-E¤ects No No Yes YesGeographic Controls No No No YesObservations 1190 1190 1190 1190
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Cross-Ethnic Group Analysis
Positive correlation between rule of law and regional development.
Correlation weakens when we control for culture and geography(mimics evidence of cross-country works)
Cleaner identi�cation:
Focus on areas of the same ethnic group subject to di¤erentnational institutions
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Cross-Ethnic Group Analysis
Positive correlation between rule of law and regional development.
Correlation weakens when we control for culture and geography(mimics evidence of cross-country works)
Cleaner identi�cation:
Focus on areas of the same ethnic group subject to di¤erentnational institutions
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Example of a Partitioned Group - Ababda
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Example of a Partitioned Group - Ewe
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Within-Ethnic Group Analysis
(1) (2) (3) (4) (5) (6)
Rule of Law 0.1129**(0.0503)
Control of Corruption 0.1239**(0.0629)
adjusted R 2 0.212 0.207within ethnicity R 2 __ __
Log Population Dens. Yes YesRD Geo Polynomial Yes YesEthnicity FE No NoGeographic Controls No NoObservations 496 496
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Within-Ethnic Group Analysis
(1) (2) (3) (4) (5) (6)
Rule of Law 0.1129** 0.0263 0.0259(0.0503) (0.0481) (0.0511)
Control of Corruption 0.1239** 0.0453 0.0432(0.0629) (0.0660) (0.0745)
adjusted R 2 0.212 0.207 0.723 0.724 0.727 0.728within ethnicity R 2 __ __ 0.058 0.059 0.062 0.063
Log Population Dens. Yes Yes Yes Yes Yes YesRD Geo Polynomial Yes Yes Yes Yes Yes YesEthnicity FE No No Yes Yes Yes YesGeographic Controls No No No No Yes YesObservations 496 496 496 496 496 496
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
BARABRA
BIDEYATNUSANNUKWEMBUKUSHU NSENGATAJAKANT
TAJAKANT
AZJER
NUKWE NUKWEBARGU
BABUKURSANGASANGADARI
KUNDA
NAMA
NUSANNUSAN
GADAMES
MBUNDA PANDESURI NDOGOKUNGDIDINGA KOBA
KWANGARENDEMBU
MBUKUSHU NUKWEDZEMBARGU
BARGUHOLONYANGIYATAJAKANT
TAJAKANTZAGHAWA AULLIMINDENDAZA KOTAMASHI BIDEYATDZEM
IMRAGEN
TLOKWAKARERUNGANGAMAGULALUVALE
HIECHWARE
FANGBONDJOUDALAN LUVALEIMRAGEN
GADAMES
GADAMES
KARA
KANEMBU
AZANDEAZANDE
SEKE DIALONKE
KOMONONDEMBU
NDEMBUCHOKWERESHIAT ANUAK
TONGA
BAJUN
GIL
TAMA
DUMA
FOUTADJALONLAKA (ADAMAWA
ABABDA
HLENGWEFOUTADJALON
AMBOYOMBE
YAO
YAO BARARETTAAZANDE TAWARASANGA
SUBIA
TUMBUKA
DIALONKE
AFAR
AFARHLENGWE
DIALONKEKANEMBU TABWAYAKOMA RESHIATRESHIAT BARARETTABARARETTA BANZIRIGURMAJIEMUNDUKUNDA NAFANAUDALANUDALAN
SUBIA
SUBIA
SUBIA TIENGAMASINAMASINABERTA
JERID
BAYAKOMANGUMBA
KONGOLAMBYA
LAMBYA
MANGA
RUANDA
NZANKARAMASALIT
GURMASONINKESONINKENDUKABIRIFONLIGBI, DEGHA (SE)BARGUHLENGWE BORANYAKA
MAMBILA
DIDINGADIDINGA NYASANYASA
DIOLA
MALINKEMALINKEMBERE
MBEREAFAR
MALINKEMALINKEFANG
SUBIA
SUBIA ESATOMA AUSHIBOKI
KARAMOJONG ISHAAKMASAI
GURMA AMERKONYANKEYALUNKAKORANKOSONGHAINALU EGBA
THONGA
SAHO
PUKU
ESA
MALINKEMALINKEMALINKE
NSENGA
KOTOKO
TEKEIWA
VAIEKOIYOMBE
YOMBEBONI TENDA
TEMTUKULOR
BUSA
CHEWA
CHEWA ANAGURMA SHUWANGERE
NGERE
NAUDEBASHUWA
DIGO
KGATLA
KAONDE
SHEBELLECHAKOSSI
MINIANKAMINIANKA
LOBIGRUNSHIMUSGU FUNGONSONGHAISUNDI WUM GREBOTIGON
FOUTADJALON
TIGRINYA
NGWAKETSE
RONGA SONINKEMOMBERALUNGU
LAMBA
BIRIFON
BWAKA LAKA (ADAMAWALAKA (ADAMAWABOBO
NYANJA
NSUNGLISAMO
ZEKARAKUNDA
BULOMKONKOMBAATYUTI
FANG
MADILUGBARA
LUGBARABIRIFON
ANYI
ADELE MPEZENIMANDARA
TIENGATIENGA DENDI MINIANKA
NDAU
KONGO
BATANGERE
LAMBYA
MANYIKADAGARITRIBU KISSI KISSIMENDEBRONG
SOTHO
KPELLEKPELLE
NYASA
ZIMBA
MUNDANG
MALINKE BALANTEKRAN
KABRE
RUNDI
GUDE
MAKONDE
BUEM
FON
KONO
ASSINI
GURENSI
ESA
AVATIME
BWAKABWAKA
SHAMBALA
WAKURA
TUBURITIGRINYA
TIGRINYA
CHAGA
MATAKAM KISSISABEINYAKYUSAMENDE
KONJOAMBA
CHEWA
GURENSI
EWE
TEKE
GUSII
GOMANI
HAUSA
ALURLUGBARABASHI
KAPSIKIRUNDIRUNDI
CHIGA CHIGA
BANYUNRUANDA
RUANDA
RUANDARUANDA
BASHIBASHI
WANGA
1.5
0.5
1D
iffer
ence
in L
ight
Den
sity
With
in P
artit
ione
d E
thni
citie
s
2 1 0 1 2
Differences in Rule of Law Within a Country Pair
Unconditional RelationshipEthnicities Partitioned Across Countries: Does Rule of Law Matter?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
BARABRA
BIDEYATNUSANNUKWEMBUKUSHU NSENGATAJAKANT
TAJAKANT
AZJER
NUKWE NUKWEBARGU
BABUKURSANGASANGADARI
KUNDA
NAMA
NUSANNUSAN
GADAMES
MBUNDA PANDESURI NDOGOKUNGDIDINGAKOBA
KWANGARENDEMBU
MBUKUSHU NUKWEDZEMBARGU
BARGUHOLONYANGIYATAJAKANT
TAJAKANTZAGHAWA AULLIMINDENDAZA KOTAMASHI BIDEYATDZEM
IMRAGEN
TLOKWAKARERUNGANGAMA GULALUVALE
HIECHWARE
FANGBONDJOUDALANLUVALEIMRAGEN
GADAMES
GADAMES
KARA
KANEMBU
AZANDEAZANDE
SEKE DIALONKE
KOMONONDEMBU
NDEMBUCHOKWERESHIAT ANUAK
TONGA
BAJUN
GIL
TAMA
DUMA
FOUTADJALONLAKA (ADAMAWA
ABABDA
HLENGWEFOUTADJALON
AMBOYOMBE
YAO
YAO BARARETTAAZANDETAWARASANGA
SUBIA
TUMBUKA
DIALONKE
AFAR
AFARHLENGWE
DIALONKEKANEMBU TABWAYAKOMA RESHIATRESHIATBARARETTABARARETTA BANZIRIGURMAJIE MUNDUKUNDANAFANA UDALANUDALAN
SUBIA
SUBIA
SUBIA TIENGAMASINAMASINABERTA
JERID
BAYAKOMANGUMBA
KONGOLAMBYA
LAMBYA
MANGA
RUANDA
NZANKARAMASALIT
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MAMBILA
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MALINKEMALINKEMBERE
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1.5
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2 1 0 1 2Differences in Corruption Within a Country Pair
Unconditional RelationshipEthnicities Partitioned Across Countries: Does Corruption Matter?
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Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Sensitivity Analysis
Migration towards the country with the better institutions (noevidence; Table 3).
Heterogeneous E¤ectsE¤ect close and far from the capital city (Herbst, 2000)
Natural - Arti�cial Borders
Other sensitivity checks
Exclude North Africa (focus on Sub-Saharan) areas.
Large di¤erences in institutional quality across the border (e.g.Kenya-Somalia, Congo-Zambia, Botswana-Zimbabwe, Ghana-Ivory Coast)
Within same colonizer
Focus on the intensive/extensive margin of satellite light density
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Heterogeneous E¤ects: Far - Close to the Capital
Distance to the Capital
Close Far Close Far(1) (2) (3) (4)
Rule of Law 0.2110** 0.0221*** -0.0056 0.0072(0.0852) (0.0068) (0.0904) (0.0219)
adjusted R 2 0.509 0.387 0.907 0.825within ethnicity R 2 __ __ 0.030 0.149
Log Population Density Yes Yes Yes YesRD Geographic Polynomial Yes Yes Yes YesEthnicity Fixed-E¤ects No No Yes YesGeographic Controls No No No YesObservations 90 90 90 90
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Heterogeneous E¤ects: Natural - Arti�cial Borders
Border Type
Natural Arti�cial Natural Arti�cial(1) (2) (3) (4)
Rule of Law 0.2029** 0.0493** 0.0510 -0.0410(0.0832) (0.0216) (0.1164) (0.0547)
adjusted R 2 0.455 0.327 0.887 0.730within ethnicity R 2 __ __ 0.0523 0.1854
Log Population Density Yes Yes Yes YesRD Geographic Polynomial Yes Yes Yes YesEthnicity Fixed-E¤ects No No Yes YesGeographic Controls No No No YesObservations 170 122 170 122
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Local Ethnic Institutions and Regional Development
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So what matters for regional development within Africa?
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Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Local Ethnic Institutions and Development: The Argument
African historians have stressed the importance of ethnic institutions(e.g. Herbst, 2000).
accountability of local chiefs; political centralizationproperty rights protection; communal societies vs. individualistic
Ethnic institutional structures persisted during colonization and postindependence
Cross-country correlation between local political centralization andeconomic development (Gennaioli and Rainer (2006, 2007))
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Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Local Ethnic Institutions and Development: The Argument
African historians have stressed the importance of ethnic institutions(e.g. Herbst, 2000).
accountability of local chiefs; political centralizationproperty rights protection; communal societies vs. individualistic
Ethnic institutional structures persisted during colonization and postindependence
Cross-country correlation between local political centralization andeconomic development (Gennaioli and Rainer (2006, 2007))
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Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Ethnic Institutional and Cultural Traits
George Peter Murdock�s (1967) Ethnolinguistic Atlas
information on 534 groups in Africa before colonization
variables on ethnic cultural traits (monogamy, polygyny),institutions (political centralization, slavery), societal structure(class strati�cation), the economy (dependence on agriculture, sizeof settlements), etc.
focus on:
"Jurisdictional Hierarchy above the Local Community Level"
"Class Strati�cation"
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Jurisdictional Hierarchy above the Local Level
Ordered variable, ranging from 0 to 4 indicating the number ofpolitical jurisdictional hierarchies above the local community level(village) for each society.
0 : stateless societies.
1 : petty chiefdoms.
2 : larger-paramount chiefdoms.
3 and 4 : groups part of large states.
Based on the number of jurisdictional hierarchy construct a binary(0, 1) index of political centralization
centralized societies increase the accountability of localadministrators, restraining the arbitrariness of local elites, Bates (1983).
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Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
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Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Class Strati�cation
Ordered variable, ranging from 0 to 4 indicating the complexity ofthe societal structure.
0 : absence of signi�cant class distinctions
1 : some wealth distinctions
2 : elite strati�cation
3 : dual strati�cation
4 : complex strati�cation
strati�ed societies are more likely to have some form of propertyrights protection (Rudmin (1995))
link between historical inequality and development through propertyrights (Acemoglu et al. 2008; Dell, 2010)
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Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Empirical Speci�cation
yi ;c = ac + �LOCINSTi + X 0i ;c�+ �PDi ;c + f (GEOi ;c ) + "i ;c (2)
yi ;c : log light density at night of ethnic group i in country c
PDi ;c : log population density of ethnic group i in country c
f (GEOi ;c ) : (regression discontinuity type) cubic polynomial indistance to the capital city and distance to nearest sea coast
Xi ;c : vector of control variables
LOCINSTi : proxy measure of ethnic institutional/cultural traits
ac : country �xed-e¤ects
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Precolonial Local Institutions and Regional Development
Jurisdictional Hierarchy
(1) (2) (3) (4)
Ethnic Institutions 0.0631** 0.0444*** 0.0375*** 0.0366***(0.0284) (0.0151) (0.0138) (0.0138)
adjusted R 2 0.146 0.536 0.617 0.621within country R 2 __ 0.148 0.212 0.233
Log Population Density Yes Yes Yes YesCountry Fixed-E¤ects No Yes Yes YesRD Geographic Polynomial No No Yes YesGeographic Controls No No Yes YesAdditional Controls No No No YesObservations 655 655 655 655
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Empirical AnalysisConclusionAppendix
Contemporaneous Institutions and Regional DevelopmentPrecolonial Institutions and Regional Development
Precolonial Local Institutions and Regional Development
Class Strati�cation
(5) (6) (7) (8)
Ethnic Institutions 0.0262* 0.0250** 0.0211*** 0.0209***(0.0136) (0.0101) (0.0081) (0.0075)
adjusted R 2 0.132 0.568 0.655 0.661within country R 2 __ 0.162 0.221 0.255
Log Population Density Yes Yes Yes YesCountry Fixed-E¤ects No Yes Yes YesRD Geographic Polynomial No No Yes YesGeographic Controls No No Yes YesAdditional Controls No No No YesObservations 578 578 578 578
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The Rule of the Divided
Jurisdictional Hierarchy
(1) (2) (3) (4)
Ethnic Institutions 0.0800*** 0.0579*** 0.0558*** 0.0544***(0.0303) (0.0187) (0.0162) (0.0154)
adjusted R 2 0.168 0.564 0.662 0.667within country R 2 __ 0.174 0.234 0.277
Log Population Density Yes Yes Yes YesCountry Fixed-E¤ects No Yes Yes YesRD Geographic Polynomial No No Yes YesGeographic Controls No No Yes YesAdditional Controls No No No YesObservations 303 303 303 303
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The Rule of the Divided (cont.)
Class Strati�cation
(5) (6) (7) (8)
Ethnic Institutions 0.0284* 0.0239** 0.0164* 0.0174*(0.0157) (0.0118) (0.0091) (0.0089)
adjusted R 2 0.110 0.610 0.705 0.715within country R 2 __ 0.170 0.225 0.275
Log Population Density Yes Yes Yes YesCountry Fixed-E¤ects No Yes Yes YesRD Geographic Polynomial No No Yes YesGeographic Controls No No Yes YesAdditional Controls No No No YesObservations 255 255 255 255
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Main Contribution
O¤ers a platform for testing standard cross-country correlates ofdevelopment
Exploit
within-ethnicity across-country variation in nationwide characteristics
within-country across-ethnicity variation in pre-colonial traits
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Results Summary
1 Current National Institutions and Regional Development
1 Positive correlation between institutional quality and regionaldevelopment;
2 BUT no e¤ect of national institutions on development withinethnicities.
2 Ethnic Institutions and Ethnic Traits and Regional Development
1 Signi�cant positive e¤ect of precolonial local institutions and regionaldevelopment.
2 The positive within country e¤ect of precolonial institutions isparticularly strong in ethnic group areas at the border.
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Empirical AnalysisConclusionAppendix
Results Summary
1 Current National Institutions and Regional Development
1 Positive correlation between institutional quality and regionaldevelopment;
2 BUT no e¤ect of national institutions on development withinethnicities.
2 Ethnic Institutions and Ethnic Traits and Regional Development
1 Signi�cant positive e¤ect of precolonial local institutions and regionaldevelopment.
2 The positive within country e¤ect of precolonial institutions isparticularly strong in ethnic group areas at the border.
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Results Summary
1 Evidence consistent with African scholars�view on the roots ofregional development.
2 Natural level of analysis within Africa is the ethnicity (rather thanthe country).
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Future Research
Other Applications:
Re-examine the e¤ect of slavery on contemporaneous development
Examine whether the fact that Europeans used di¤erent ethnicgroups during the colonial phase has lingering e¤ects on regionaldevelopment
Do partitioned ethnicities fare worse than other groups? PublicGood Provision etc.
Does the ethnic origin of the African ruler matter for regionaldevelopment?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Future Research
Other Applications:
Re-examine the e¤ect of slavery on contemporaneous development
Examine whether the fact that Europeans used di¤erent ethnicgroups during the colonial phase has lingering e¤ects on regionaldevelopment
Do partitioned ethnicities fare worse than other groups? PublicGood Provision etc.
Does the ethnic origin of the African ruler matter for regionaldevelopment?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Future Research
Other Applications:
Re-examine the e¤ect of slavery on contemporaneous development
Examine whether the fact that Europeans used di¤erent ethnicgroups during the colonial phase has lingering e¤ects on regionaldevelopment
Do partitioned ethnicities fare worse than other groups? PublicGood Provision etc.
Does the ethnic origin of the African ruler matter for regionaldevelopment?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
Future Research
Other Applications:
Re-examine the e¤ect of slavery on contemporaneous development
Examine whether the fact that Europeans used di¤erent ethnicgroups during the colonial phase has lingering e¤ects on regionaldevelopment
Do partitioned ethnicities fare worse than other groups? PublicGood Provision etc.
Does the ethnic origin of the African ruler matter for regionaldevelopment?
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
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Empirical AnalysisConclusionAppendix
What Predicts Borders?Sensitivity AnalysisWhy National Institutions May Not Matter?Why Local Tribal Institutions Matter?
Are Borders Random?
(1) (2) (3) (4) (5) (6)
Land Area 0.079*** 0.083*** 0.081** 0.038** 0.039** 0.053*(0.021) (0.021) (0.032) (0.019) (0.018) (0.028)
Warer Area 0.161*** 0.156*** 0.142** 0.131*** 0.133*** 0.098**(0.048) (0.044) (0.055) (0.027) (0.025) (0.043)
Distance to Sea 0.004 0.007 0.003 0.006 0.015 0.032(0.038) (0.034) (0.044) (0.031) (0.028) (0.041)
Elevation 0.048 0.001 0.044 0.051 0.006 0.048(0.101) (0.106) (0.117) (0.083) (0.087) (0.108)
Agriculture Suitability 0.18 0.168 0.033 0.174 0.176 0.018(0.120) (0.119) (0.145) (0.120) (0.110) (0.159)
North Africa 0.014 0.038 0.098 0.162*(0.083) (0.064) (0.069) (0.098)
South Africa 0.150* 0.216* 0.118 0.106(0.087) (0.113) (0.080) (0.112)
West Africa 0.132 0.177 0.046 0.032(0.110) (0.119) (0.091) (0.099)
East Africa 0.018 0.035 0.096* 0.1(0.074) (0.100) (0.052) (0.085)
Hist. Popul. Density 0.008 0.006(0.021) (0.020)
Agriculture Depend 0.061 0.021(0.075) (0.062)
Political Centralization 0.047 0.07(0.063) (0.064)
Slavery 0.023 0.029(0.074) (0.090)
adjusted Rsquared 0.090 0.110 0.140 0.050 0.070 0.080Observations 834 834 330 834 834 330
Border Indicator Split Indicator (10%)
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Migration Within Partitioned Ethnicities
(1) (2) (3) (4) (5) (6)
Rule of Law -0.6487* -0.0249 -0.0122(0.3668) (0.2925) (0.3109)
Control of Corruption -0.8149** -0.0967 -0.1067(0.4019) (0.3427) (0.3731)
adjusted R 2 0.247 0.255 0.827 0.827 0.834 0.834within ethnicity R 2 __ __ 0.018 0.018 0.025 0.025
Log Population Dens Yes Yes Yes Yes Yes YesRD Geo Polynomial Yes Yes Yes Yes Yes YesEthnicity FE No No Yes Yes Yes YesGeographic Controls No No No No Yes YesObservations 496 496 496 496 496 496
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Sharp Discontinuities
cross-sectional within ethnicity(1) (2)
Rule of Law 0.1562** 0.0407(0.0669) (0.0669)
adjusted R 2 0.450 0.891within ethnicity R 2 __ 0.0485
Log Population Density Yes YesRD Geographic Polynomial Yes YesGeographic Controls Yes YesEthnicity Fixed-E¤ects No YesObservations 150 150
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Intensive and Extensive Margin
Intensive Margin Extensive Margincross-sectional within ethnicity cross-sectional within ethnicity
(1) (2) (3) (4)
Rule of Law 0.8422** -0.3889 0.1257*** -0.0293(0.3326) (0.7622) (0.0455) (0.1210)
adjusted R 2 0.443 0.825 0.416 0.733within ethnicity R 2 __ 0.0774 __ 0.0887
Log Population Dens Yes Yes Yes YesRD Geo Polynomial Yes Yes Yes YesGeographic Controls Yes Yes Yes YesEthnicity Fixed-E¤ects No Yes No YesObservations 144 144 292 292
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What Predicts Borders?Sensitivity AnalysisWhy National Institutions May Not Matter?Why Local Tribal Institutions Matter?
Why National Institutions May Not Matter?
Once cultural traits are accounted for then national institutions playa lesser role
Measurement error
look close and far from the capital city where enforcement agencies are mainly
located.
National institutions are less relevant for the activities withinpartitioned groups
Subnational variation of nationwide institutions makes the use of anational averages less informative
currently collecting data on local formal institutions
National institutions a¤ect ethnicities di¤erentially
currently looking at the role of patronage politics and foreign aid.
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
IntroductionData
Empirical AnalysisConclusionAppendix
What Predicts Borders?Sensitivity AnalysisWhy National Institutions May Not Matter?Why Local Tribal Institutions Matter?
Why National Institutions May Not Matter?
Once cultural traits are accounted for then national institutions playa lesser role
Measurement error
look close and far from the capital city where enforcement agencies are mainly
located.
National institutions are less relevant for the activities withinpartitioned groups
Subnational variation of nationwide institutions makes the use of anational averages less informative
currently collecting data on local formal institutions
National institutions a¤ect ethnicities di¤erentially
currently looking at the role of patronage politics and foreign aid.
Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?
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Empirical AnalysisConclusionAppendix
What Predicts Borders?Sensitivity AnalysisWhy National Institutions May Not Matter?Why Local Tribal Institutions Matter?
Why Local Tribal Institutions Matter?
Tribal institutions were enginneered locally so are bound to re�ecte¢ cient ways of solving local problems
Degree of class strati�cation has been shown to correlate with localproperty rights
Centralized societies increase the accountability of localadministrators, restraining the arbitrariness of local elites, Bates(1983).
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Summary Table
obs mean st.dev. p25 p50 p75 min max
Light Densiy20072008
1269 0.13 0.27 0.00 0.02 0.11 0.00 1.73
Control ofCorruption
1264 0.78 0.49 1.05 0.87 0.47 1.59 0.72
Rule of Law 1264 0.85 0.58 1.27 0.89 0.46 1.91 0.71
Split10pcIndicator
1269 0.43 0.49 0.00 0.00 1.00 0.00 1.00
Distance to theCapital City
1269 0.64 0.62 0.27 0.43 0.74 0.01 3.17
PopulationDensity in 2000
1225 2.72 1.80 1.82 3.00 3.95 6.67 6.22
Area 1269 1.84 1.93 0.87 2.07 3.12 6.82 6.20Water Area 1269 0.26 0.42 0.00 0.09 0.32 0.00 3.12
Sea Distance 1269 0.66 0.45 0.27 0.61 0.99 0.01 1.81
Mean Elevation 1269 0.62 0.44 0.30 0.49 0.94 0.00 2.18
Suitability ForAgriculture
1269 0.40 0.24 0.25 0.42 0.57 0.00 0.98
CentralizationIndicator
702 0.35 0.48 0.00 0.00 1.00 0.00 1.00
JurisdictionalHierarchy
702 1.21 0.95 0.00 1.00 2.00 0.00 4.00
ClassStratification
623 1.37 1.41 0.00 1.00 3.00 0.00 4.00
Appendix Table 2a Summary Statistics for the Main Specifications
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Correlation TableLightDensity
Control ofCorruption
RuleofLaw
Distanceto theCapital
PopulationDensity in2000
Area WaterArea
SeaDistance
MeanElevation
SuitabilityForAgriculture
CentralizationIndicator
JurisdictionalHierarchy
ClassStratification
Light Densiy20072008
1.00
Control ofCorruption
0.27 1.00
Rule of Law 0.24 0.91 1.00
Split10pcIndicator
0.06 0.10 0.09
Distance tothe CapitalCity
0.18 0.29 0.37 1.00
PopulationDensity in2000
0.29 0.07 0.05 0.29 1.00
Area 0.09 0.05 0.04 0.09 0.19 1.00
Water Area 0.08 0.10 0.08 0.02 0.21 0.43 1.00
Sea Distance 0.32 0.29 0.27 0.49 0.28 0.06 0.08 1.00
MeanElevation
0.08 0.06 0.15 0.06 0.05 0.03 0.10 0.26 1.00
Suitability ForAgriculture
0.05 0.12 0.01 0.07 0.34 0.28 0.39 0.08 0.25 1.00
CentralizationIndicator
0.21 0.18 0.19 0.06 0.07 0.11 0.13 0.00 0.12 0.12 1.00
JurisdictionalHierarchy
0.23 0.16 0.15 0.07 0.08 0.10 0.13 0.04 0.13 0.10 0.86 1.00
ClassStratification
0.14 0.11 0.10 0.04 0.05 0.09 0.16 0.00 0.10 0.10 0.59 0.63 1.00Stelios Michalopoulos and Elias Papaioannou Divide and Rule or the Rule of the Divided?