What was the name of the 1803 land deal in which the United States acquired territory from France?

The 1803 land deal in which the United States acquired territory from France was the Louisiana Purchase.

The agreement transferred roughly 828,000 square miles of territory for $15 million, or about three cents per acre. The land stretched from the Mississippi River to the Rocky Mountains and from the Gulf of Mexico toward the Canadian border.

President Thomas Jefferson authorized negotiations after France regained control of Louisiana and threatened American access to the port of New Orleans. The purchase was completed during the administration of Napoleon Bonaparte, whose government needed funds for European warfare.

The acquisition nearly doubled the size of the United States, but its constitutional basis was debated at the time. The territory later became all or part of 15 U.S. states. The Louisiana Purchase is distinct from the later Gadsden Purchase, which added land from Mexico in 1853.