What did spain do after the american revolution to discourage american settlements west of the appalachian mountains?
a. spain placed a heavy tariff on american-made goods.
b. spain for bed america trade in new orleans
c. spain attacked american ships at sea
d. spain went to war with the united states

The answer is letter A.
Spain placed a heavy-tariff on American-made goods. This occurred after the signing of the Second Treaty of Paris in 1783 that marked the end of the American Revolution. Spain was the main colonizers of the Louisiana and Texas states during those days and they were blocking the mouth of Mississippi to foreigners preventing them to sell their crops. Guns and ammunition were also sold to native Americans that were part of this colonization and tariffs were implemented highly to prevent further selling of goods and for Spain to fully monopolize the trade industry.