Admittedly, the final estimates for the Saharan slave trade are very poor. This is also true for the Red Sea slave trade. However, it will be shown that all of the statistical results are completely robust with or without the estimates of slaves shipped during these two slave trades. That is, the statistical findings remain even if the Red Sea and Saharan slave trades are completely ignored because of the poor quality of their data. Combining the ethnicity data with the shipping data, estimates of the number of slaves taken from each country in Africa are constructed.The construction procedure follows the following logic. Using the shipping data, the number of slaves shipped from each coastal country in Africa is first calculated. As mentioned, the problem with these numbers is that slaves shipped from the ports of a coastal country may not have come from that country, but from inland countries that lie landlocked behind the coastal country. To estimate the number of slaves shipped from the coast that would have come from these inland countries, the sample of slaves from the ethnicity data is used. Each ethnicity is first mapped to modern country boundaries. This step relies on a great amount of past research by African historians. The authors of the secondary sources, from which the data were taken, generally also provide a detailed analysis of the meaning and locations of the ethnicities appearing in the historical records. In many of the publications, the authors created maps showing the locations of the ethnic groups recorded in the documents. For example, detailed maps are provided in Higman’s samples from the British Caribbean, Koelle’s linguistic inventory of free slaves in Sierra Leone, Mary Karasch’s samples from Rio de Janeiro, Aguirre Beltran’s sample from plantation and sales records from Mexico, Adam Jones’ sample of liberated child slaves from Sierra Leone, and David Pavy’s sample of slaves from Colombia.Other sources also provide excellent summaries of the most common ethnic designations used during the slave trades. These include Philip Curtin’s The Atlantic Slave Trade: A Census, ethnographer George Peter Murdock’s Africa: Its Peoples and Their Cultural History, and Gwendolyn Midlo Hall’s Slavery and African Ethnicities in the Americas: Restoring the Links. Many of the ethnic groups in the ethnicity sample do not map cleanly into one country. The quantitatively most important ethnic groups that fall into this category include: the Ana, Ewe, Fon, Kabre, and Popo, who occupied land in modern Benin and Togo; the Kongo, who resided in what is now the Democratic Republic of Congo and Angola; the Makonde, localized within Mozambique and Tanzania; the Malinke, who occupied lived within Senegal, Gambia, Mali, Guinea, Ivory Coast, and Guinea Bissau; the Nalu, from Guinea Bissau and Guinea; the Teke, living in land within Gabon, Congo, and Democratic Republic of Congo; and the Yao from Malawi, Mozambique, and Tanzania. In cases such as these, the total number of slaves from each ethnic group was divided between the countries using information from George Peter Murdock’s Africa: Its Peoples and Their Cultural History. Ethnic groups were first mapped to his classification of over 800 ethnic groups for Africa. Using a digitized version of a map provided in his book and GIS software, the proportion of land area in each country occupied by the ethnic group was calculated. These proportions were then used as weights to disaggregate the total number of slaves of an ethnicity between the countries. Using the ethnicity sample, an estimate of the number of slaves shipped from each coastal country that would have come from each inland country is calculated. Using these figures, the number of slaves that came from all countries in Africa, both coastal and inland, is then calculated. Because over time, slaves were increasingly being taken from further inland, the estimation procedure is performed separately for each of the following four time periods: 14001599, 1600-1699, 1700-1799, 1800-1900. In other words, for each time period, the shipping data and ethnicity data from that time period only is used in the calculations. In the end, the procedure yields estimates of the number of slaves taken from each country in each of the four slave trades for each of the four time periods listed above.
maureennompumelelo1 on 26 Apr 23Stanley was the first explorer to measure the Congo River length, travel to Lake Victoria and responsible for making transportation paths in Central Africa.
