Songhai, African Empire, 15-16th Century
… a result, Portugal was responsible for transporting over 4.5 million Africans, approximately 40 percent of the slaves … 18th century however, Britain was responsible for almost 2.5 million of the 6 million African slaves traded. Due to … and packed together side-by-side in holds which were about 1.5 m high with hardly any light and fresh air. They were …