What is a region controlled by us government?

the United States, a territory is any extent of region under the sovereign jurisdiction of the federal government of the United States,

In the United States, a territory is any extent of region under the sovereign jurisdiction of the federal government of the United States, including all waters. The United States asserts sovereign rights for exploring, exploiting, conserving, and managing its territory.

probably 3 since archeologists and historians don’t understand there writing.