The state of Maryland ceded a portion of its land north of the Potomac River and the state of Virginia ceded a portion of its land south of the Potomac River to create District of Columbia. It would have been a perfect square (standing on a point) as called for in the US Constitution and as drawn by George Washington, but Virginia asked to have its part back and the federal government gave it back.
The United States Government
The Food and Drug Administration (FDA) is a regulatory agency of the United States Federal Government, so in a sense, yes it is owned by them.
National forests are owned by the Federal government, and the United States Forest Service, part of the United States Department of Agriculture, takes care of the forest.
Alaska was first owned by the Russians, but they were afraid of war so they sold it to the United States.
There are no such thing in law in the United States as squatters rights. State owned land cannot be acquired by adverse possession in Massachusetts.
NASA (National Aeronautics and Space Administration) is a US government agency, owned (and paid for) by the people of the United States.
Camp Pendleton is owned and operated by the United States Marine Corps. It is a major base for the Marine Corps and is located in Southern California.
The United States Postal Service (USPS) is an independent agency of the United States government (see 39 U.S.C. § 201) responsible for providing postal service in the United States. Within the United States, it is commonly referred to as the Post Office, Postal Service, or U.S. Mail.
The area was first owned by Mexico and then the United States.
The French held claim to the Louisiana territories from 1763 to 1803. The Louisiana Territories were purchased by the United States during the Jefferson administration.
There are approximately 68 million owned dogs in the United States. There are approximately 73 million owned cats in the United States.
Make the United States a "democratic empire"