Slavery
Slavery is a system where people are bought and controlled to do work for their owner. Slavery started when the first civilizations were made. The Aztecs, Egyptians, and Greeks all had slaves. Many slaves were brought from Africa to the U.S. Luckily, slavery ended in the U.S. when the Union defeated the Confederacy during the Civil War. The thirteenth amendment was made after the war to abolish slavery.