The Louisiania Purchase was made in 1803, the U.S. paid France 15 million dollars.
The Louisiana Purchase included 524,800,000 acres, for which the US paid $15,000,000. $15,000,000/524,800,000 = .028582 .... cents per acre.
. 15 million US Dollars or 60 million French francs. Because this was paid in installments, the total including interest was $23,213,568.france sold it to the united states for $15 million
12.000
$15 million, which was like 3 cents an acre at the time