The French.
They purchased it from France.
They paid Mexico for the Southwest after defeating them in the Mexican War.
Louisana purchase from the king of frace.
seven cents
Louisana Purchase
Thomas Jefferson.
The Louisiana Territory which includes the state of Louisiana and a whole lot more was purchased from France in 1803 for $15 million.
purchase?
The whole territory of Louisiana (around 12 states) was owned by the Spanish, but Napoleon persuaded the Spanish to give it back to France in 1802. The Us bought the territory from Napoleon in 1803.
Louisiana purchase
It doubled the size of the us!