Slavery seems like a word that has one definition and is easy to understand. It also seems like slavery only took place in the 1700s and 1800s because that seems to be when most people remember it. However, slavery has been taking place for hundreds of years and probably started at the beginning of human existence or soon to that.
Also, people think that slavery has ended. It may not be as prevalent as it once was, but it continues to happen to this day. It happens everywhere. Whenever someone is forced to work and held against their will, this is a form of slavery. One unusual event in Ancient Rome is when masters and their slaves would change places during a specific festival.