Negotiations happened before, but the official year is 1803, when the treaty reached Washington DC
The US bought the Louisiana purchase from France in 1803.
Paris, France Paris, France
The Louisiana Purchase was approved by the United States Senate on October 20, 1803.
It occured in the year of 1803.
the year was April 30, 1803.
In 1803.
1803
It was purchased in 1803.
1803
1803
It was carved up into various Territories which later became States.
The correct spelling is Louisiana Purchase (1803).