Louisiana Territory was purchased in 1803. Florida Territory was purchased in 1821, California, New Mexico and Arizona Territory followed with the Mexican American War. Alaska in 1867.
Alaska
The Wyoming Territory
In 1867.
France
The US gained Alaska in 1867.
The US acquired Alaska from Russia and the Alaskan Purchase was made in 1867.March 30 1867
They purchased it from France.
The US acquired the territory of Florida from Spain ceding it to the US.
In 1846 Britain agreed for the US to take control of the territory
Alaska was purchased from Russia in 1867 for 7.2 million dollars.
figure it out yourself REAL ANSWER: 1867