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Spatial Inefficiencies in Africa's Trade Network

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  • Tilman Graff

Abstract

I assess the efficiency of transport networks for every country in Africa. Using rich spatial data, I simulate trade flows over more than 70,000 links covering the entire continent. I maximise over the space of networks and find the optimal road system for every African state. My simulations predict that Africa would gain 1.1% of total welfare from better organising its national road systems. I then construct a novel dataset of local network inefficiency and I find that colonial infrastructure projects significantly skew trade networks towards a sub-optimal equilibrium. I also find evidence for regional favouritism and inefficient aid provision.

Suggested Citation

  • Tilman Graff, 2019. "Spatial Inefficiencies in Africa's Trade Network," NBER Working Papers 25951, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:25951
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    References listed on IDEAS

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    1. Stelios Michalopoulos & Elias Papaioannou, 2013. "Pre‐Colonial Ethnic Institutions and Contemporary African Development," Econometrica, Econometric Society, vol. 81(1), pages 113-152, January.
    2. Elias Papaioannou, 2014. "National Institutions and Subnational Development in Africa," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(1), pages 151-213.
    3. Donaldson, Dave & Atkin, David, 2015. "Who?s Getting Globalized? The Size and Implications of Intra-national Trade Costs," CEPR Discussion Papers 10759, C.E.P.R. Discussion Papers.
    4. Guy Michaels & Dzhamilya Nigmatulina & Ferdinand Rauch & Tanner Regan & Neeraj Baruah & Amanda Dahlstrand, 2021. "Planning Ahead for Better Neighborhoods: Long-Run Evidence from Tanzania," Journal of Political Economy, University of Chicago Press, vol. 129(7), pages 2112-2156.
    5. Alberto Alesina & Eliana La Ferrara, 2003. "Ethnic Diversity and Economic Performance," Harvard Institute of Economic Research Working Papers 2028, Harvard - Institute of Economic Research.
    6. Nathan Nunn & Nancy Qian, 2014. "US Food Aid and Civil Conflict," American Economic Review, American Economic Association, vol. 104(6), pages 1630-1666, June.
    7. repec:oup:qjecon:v:129:y:2013:i:1:p:151-213 is not listed on IDEAS
    8. Raghuram G. Rajan & Arvind Subramanian, 2008. "Aid and Growth: What Does the Cross-Country Evidence Really Show?," The Review of Economics and Statistics, MIT Press, vol. 90(4), pages 643-665, November.
    9. Treb Allen & Costas Arkolakis, 2014. "Trade and the Topography of the Spatial Economy," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(3), pages 1085-1140.
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    Cited by:

    1. Gorton,Nicole Emily & Ianchovichina,Elena, 2021. "Trade Networks in Latin America : Spatial Inefficiencies and Optimal Expansions," Policy Research Working Paper Series 9843, The World Bank.
    2. Dias, Lucas & Haddad, Eduardo & Maggi, Andrés, 2020. "Optimal Road Network and the Gains from Intranational Trade," TD NEREUS 15-2020, Núcleo de Economia Regional e Urbana da Universidade de São Paulo (NEREUS).
    3. Fiorini, Matteo & Sanfilippo, Marco & Sundaram, Asha, 2021. "Trade liberalization, roads and firm productivity," Journal of Development Economics, Elsevier, vol. 153(C).

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    More about this item

    JEL classification:

    • F1 - International Economics - - Trade
    • O18 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Urban, Rural, Regional, and Transportation Analysis; Housing; Infrastructure
    • R4 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Transportation Economics

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