The seller of the Louisiana Territory was France. France sold the Louisiana Territory to the United States in 1803. This was known as the Louisiana Purchase. The French Emperor, Napoleon Bonaparte, decided to sell the territory due to financial difficulties and the need for money to fund France's military campaigns in Europe. To get this information, you can simply do an internet search using keywords like "seller of Louisiana territory" or "Louisiana Purchase" to find reliable sources such as historical records, academic articles, or government websites.
