The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.
Ruggedness: The Blessing of Bad Geography in Africa
Open accessAbstract
There is controversy about whether geography matters mainly because of its contemporaneous impact on economic outcomes or because of its interaction with historical events.Looking at terrain ruggedness, we are able to estimate the importance of these two channels.Because rugged terrain hinders trade and most productive activities, it has a negative direct effect on income.However, in Africa rugged terrain afforded protection to those being raided during the slave trades.Since the slave trades retarded subsequent economic development, in Africa ruggedness has also had a historical indirect positive effect on income.Studying all countries worldwide, we find that both effects are significant statistically and that for Africa the indirect positive effect dominates the direct negative effect.Looking within Africa, we also provide evidence that the indirect effect operates through the slave trades.
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World map of the Köppen-Geiger climate classification updated
Kottek, M., Grieser, J., Beck, C., Rudolf, B., & Rubel, F. (2006) · Meteorologische Zeitschrift · doi:10.1127/0941-2948/2006/0130 · Cited by 11,456
The colonial origins of comparative development: An empirical investigation
Acemoglu, D., Johnson, S., & Robinson, J. A. (2001) · American Economic Review · doi:10.1257/aer.91.5.1369 · Cited by 8,517
Ethnicity, Insurgency, and Civil War
FEARON, J. D., & LAITIN, D. D. (2003) · American Political Science Review · doi:10.1017/s0003055403000534 · Cited by 7,366
La Porta, R. (1999) · Journal of Law, Economics, and Organization · doi:10.1093/jleo/15.1.222 · Cited by 5,699
The economic and social burden of malaria
Sachs, J., & Malaney, P. (2002) · Nature · doi:10.1038/415680a · Cited by 2,248
Research works printed but not linked: 26
- 10.1162/003355302320935025 · DOI · Paper page
- 10.1111/j.1467-8373.2005.00274.x · DOI
- 10.2307/2717386 · DOI
- Bah Thierno Mouctar, 1976, African Environment, 76, 3
- 10.1162/qjec.2006.121.2.587 · DOI · Paper page
- 10.1093/oep/gpf064 · DOI
- 10.3982/ECTA8121 · DOI · Paper page
- Gallup John Luke, 2001, American Journal of Tropical Medicine and Hygiene, 64, 1, 10.4269/ajtmh.2001.64.1 · DOI · Paper page
- 10.1017/S0021853700010707 · DOI
- Hubbell Andrew, 2001, Journal of African History, 42, 25, 10.1017/S0021853700007805 · DOI
- Kiszewski Anthony, 2004, American Journal of Tropical Medicine and Hygiene, 70, 486, 10.4269/ajtmh.2004.70.486 · DOI · Paper page
- 10.1023/B:AARR.0000030785.72144.4a · DOI · Paper page
- 10.1257/jel.46.2.285 · DOI · Paper page
- Marchesseau G., 1945, Bulletin de la Société d'Etudes Camerounaises, 10, 7
- 10.1111/j.1468-0297.2006.01045.x · DOI · Paper page
- 10.1162/qjec.2008.123.1.139 · DOI · Paper page
- Nunn Nathan, American Economic Review (forthcoming).
- 10.1257/app.1.4.1 · DOI
- Podlewski André Michel, 1961, Recherches et Etudes Camerounaises, 4, 1
- Ramcharan Rodney, 2006, International Monetary Fund working paper, 35
- 10.1023/A:1022870216673 · DOI · Paper page
- Riley Shawn J, 1999, Intermountain Journal of Sciences, 5, 1
- 10.1016/j.jdeveco.2006.01.008 · DOI · Paper page
- 10.1038/scientificamerican0301-70 · DOI · Paper page
- 10.1016/S0014-2921(01)00125-8 · DOI · Paper page
- 10.1257/jep.14.3.217 · DOI · Paper page
Cited by
On the Origins of Gender Roles: Women and the Plough *
Alesina, A., Giuliano, P., & Nunn, N. (2013) · The Quarterly Journal of Economics · doi:10.1093/qje/qjt005 · Cited by 1,866
Self-citationPre-Colonial Ethnic Institutions and Contemporary African Development
(2013) · Econometrica · doi:10.3982/ecta9613 · Cited by 953
The Potato's Contribution to Population and Urbanization: Evidence From A Historical Experiment
Nunn, N., & Qian, N. (2011) · The Quarterly Journal of Economics · doi:10.1093/qje/qjr009 · Cited by 808
Self-citationThe long-run effects of the scramble for Africa
Michalopoulos, S., & Papaioannou, E. (2016) · American Economic Review · doi:10.1257/aer.20131311 · Cited by 424
The Legacy of Historical Conflict: Evidence from Africa
BESLEY, T., & REYNAL-QUEROL, M. (2014) · American Political Science Review · doi:10.1017/s0003055414000161 · Cited by 322
Metadata
- Authors
- Nunn, N., & Puga, D.
- Venue
- Review of Economics and Statistics
- Publisher
- MIT Press
- Published
- 2012-02
- Volume
- 94
- Issue
- 1
- Pages
- 20-36
- ISSN
- 0034-6535 (ISSN-L)
- 1530-9142
- OpenAlex
- W2889827801
- Cited by
- 1,187
- References
- 5
- FWCI
- 57.56
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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