The Wilmot Proviso... A) opposed the war with Mexico.

B) tried to ban slavery in the Mexican Cession.

C) made slavery legal in the Mexican Cession.

D) approved the Gadsden Purchase.

the answer is

Explanation:

The Wilmot Proviso

B. Tried to ban slavery in the Mexican Cession.

*theres another question to this question so heres the answer*

What happened after the Wilmot Proviso was introduced in Congress?

B.It failed to become law.

B

Explanation:

the other one B

i can

explanation:

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.