Washington, D.C., is the capital of the United States and serves as the center of the federal government, housing the President, Congress, and the Supreme Court.
The Mississippi River is the second-longest river in the U.S., and the Missouri River is the longest. They play significant roles in American geography and history.
The Pacific Ocean borders the West Coast of the U.S., including states like California, Oregon, and Washington.
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The United States has five major territories: Puerto Rico, Guam, American Samoa, the U.S. Virgin Islands, and the Northern Mariana Islands.
The 13 stripes on the U.S. flag represent the 13 original colonies that declared independence from Great Britain.
