The predominant explanations on the deep roots of contemporary African development are centered around the influence of Europeans during the colonial period (Acemoglu, Johnson, and Robinson 2001Robinson , 2002Robinson , 2005, but also in the centuries before colonization when close to 20 million slaves were exported from Africa (Nunn 2008). Yet in the period between the ending of the slave trades and the beginning of the colonial rule, another major event took place that, according to the African historiography, had malicious long-lasting consequences. During the "Scramble for Africa," that starts with the Berlin Conference of 1884-1885 and is completed by the turn of the twentieth century, Europeans partitioned Africa into spheres of influence, protectorates, and colonies. The borders were designed in European capitals at a time when Europeans had barely settled in Africa and had limited knowledge of local conditions. Despite their arbitrariness, boundaries outlived the colonial era.