How did the secret agree meant between Spain and France over Louisiana affect American trade in the west?

Answer 1

The secret agreement between Spain and France, known as the Treaty of San Ildefonso in 1800, transferred control of Louisiana from Spain back to France. This development raised concerns for American traders and settlers, as it threatened their access to the Mississippi River and vital trade routes. The fear of increased French control and potential restrictions on trade prompted the U.S. to seek greater territorial expansion, ultimately leading to the Louisiana Purchase in 1803, which significantly enhanced American trade opportunities in the West.