From day one the United States has included both states and territories, with the territories treated differently. In 1940, when the Philippines was a U.S. possession, 19 million U.S. nationals ...

Alaska. The U.S. purchased Alaska, a territory from Russia, in 1867 for 586,412 square miles of territory for $12 per square mile, less than two cents an acre, for a total of $7.2 million.Alaska ...