Answer:
Between 1400 and 1900, the African continent experienced four sizeable slave trades. The largest and best-known was the trans-Atlantic slave trade where, beginning in the 15th century, slaves were shipped from West Africa, West Central Africa, and Eastern Africa to the European colonies in the New World. The three other slave trades – the trans-Saharan, Red Sea, and Indian Ocean slave trades – were smaller in scale and predated the trans-Atlantic slave trade. During the trans-Saharan slave trade, slaves were taken from south of the Saharan desert and shipped to Northern Africa. In the Red Sea slave trade, slaves were taken from inland of the Red Sea and shipped to the Middle East and India. In the Indian Ocean slave trade, slaves were taken from Eastern Africa and shipped either to the Middle East, India, or the plantation islands in the Indian Ocean. In total, close to 20 million slaves were taken from the continent (Nunn 2008). According to the best estimates, by 1800 Africa’s population was half of what it would have been, had the slave trades not occurred (Manning 1990).
Slaves were captured through kidnappings, raids, and warfare. A summary of the method of enslavement among a sample of 144 former slaves is provided in Table 1. Historical accounts suggest that the pervasive insecurity, violence and warfare had detrimental impacts on the institutional, social, and economic development of societies. There are numerous examples of the slave trades causing the deterioration of domestic legal institutions, the weakening of states, and political and social fragmentation (e.g. Inikori 2000, 2003, Heywood 2009).
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