All of the following were effects of the Pinckney Treaty EXCEPT
A. it ensured that Great Britain would abandon its military posts on the northern frontier.
B. it strengthened the position of the U.S. in the global community.
C. it opened the Mississippi River to U.S. navigation.
D. it expanded the boundaries of the U.S..
(I will give you brainliest if you are correct, thank you.)
