In Africa villages were burned, its people were captured and then enslaved. In this case they were forced to work for the colonialists! Here is a photo of Nwembe Village in Kenya being burned! It was taken around 1915.
It pretty much represents how slaves were captured and shipped to new lands. Villages and crops were burned and those who could hid in the bush and often starved to death. Slavery was one of man's greatest atrocities.