The U.S. initially acquired the rights to build and operate the Panama Canal in 1903 through the Hay–Bunau–Varilla Treaty which gave the U.S. a 10-mile wide strip of land for a one-time payment of $10 ...

National Archives The Louisiana Purchase, which more than doubled the size of the existing United States, provided Easterners with more than enough room to grow, and it quickly became a great ...

The Louisiana Purchase changed the trajectory of U.S. expansion in the beginning of the 19th century, allowing the size of the country to grow by 530,000,000 acres. And at only a cost to the U.S ...