system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What are U.S. Territories?

What exactly are the U.S. Territories and how do they work?
gpt
They are areas of the world under the control of the US government but are not officially part of the US itself. Selected parts of the US constitution apply to them. They don't have representatives in Congress, but their citizens are treated as US citizens. The legal jurisdiction over them is a combination of federal jurisdiction and their own territory court or commonwealth court.