Answer:
The Third Treaty of San Ildefonso was a secret agreement signed on 1 October 1800 between the Spanish Empire and the French Republic by which Spain agreed in principle to exchange its North American colony of Louisiana for territories in Tuscany.
Explanation:
i really wanted to help hope i did
Im pretty sure its B
Correct me if im wrong
I think its 2
Answer:It led to the Crusades and the spread of new ideas.
