An internment camp is a place where people, usually during wartime, are held against their will. It's like a prison, but instead of criminals, it holds people who are from a certain part of the world or who have different beliefs. During World War II, the US government made internment camps and put Japanese-Americans in them, even though they hadn't done anything wrong. It was a way for the US to keep an eye on them and make sure they didn't help the enemy. Even today, some countries have internment camps for people who don't agree with the government or who are from places the government thinks might be a threat.