Literacy test. A lot of states had made it so African American had to take these test in order to be able to vote. The questions were hard and confusing so most of the blacks could not pass since they were not as well educated at the time unlike most white people that had always had good education.
Hunter-gathers around the world often migrate when food resources become scarce. ... At the same time, how far and how often hunter-gatherers need to move depends on the food resources—the available energy—in the local environment
