A. with captured Africans who were brought as slaves
During that time period, certain African group leaders would conquer other African tribes and sell the members as slaves to Europeans, who then sold them to colonists in the Americas. These kidnapped Africans were then used to fill the need for labor on plantations, including sugar, in the Americas.
Establishing airfields to fight the Japanese Air Force
After World War 2, the U.S. emerged as a world superpower and our economy was booming. Our nation was extremely rich, basically.
After the Nazis conquered territory in Europe, they forced Jewish people to work as forced labor in the labor camps. The Jews were not even given proper amount of food. They were treated very badly and even had to work till they dropped dead. Those Jews that were unable to work were killed. I hope the answer helps you.