Two of the most major consequences of the French and Indian War were that 1) the French had to cede large amounts of territory to the British, and 2) the British started heavily taxing the colonies which helped lead to the American Revolution.
A. Discourage the spread of the National Bank
From what I can recall, the Adams-Onis Treaty more or less gave Florida to the U.S. but it did not exactly end the Second Seminole War, which can be made obvious with the fact that there are Seminoles still living in Florida. I don't remember the Treaty having anything to do with the British since this treaty was between Spain and the U.S.
Basically, I believe the answer is B.
The Answer You're Looking For Is:
~The Invasion Of Belgium.
Hope this helps.
