Question

choose the best answer.

the ______ was the u.s. policy concerning future european involvement in the americas.
monroe doctrine
monroe treaty
mississippi treaty

Explanation:

The Monroe Doctrine was a U.S. foreign policy announced in 1823 that opposed future European colonization or interference in the Americas. The other options are incorrect: there is no major "Monroe Treaty" focused on this policy, and the Mississippi Treaty (Pinckney's Treaty) dealt with U.S. access to the Mississippi River and border issues with Spain, not European involvement in the Americas broadly.

Answer:

Monroe Doctrine