Most of the US Imperial territory was taken from the Spanish in the Spanish-American War in 1898. Some other territories came as a result of negotiations with the other Great Powers and some more territories came as a result of World War II.
US bought it from Mexico.
France
britian
1917
The US has never acquired Spain.
In 1898.
1848
From France.The french.
its the 49 state
1917.
1848
Spain