What was the Monroe Doctrine?

The Monroe Doctrine was a United States policy that opposed European colonialism in the Americas.

Explanation:

why was the national assembly formed by the third estate?

the estates-general had not been assembled since 1614, and its deputies drew up long lists of grievances and called for sweeping political and social reforms. the third estate, which had the most representatives, declared itself the national assembly and took an oath to force a new constitution on the king.

answer; i believe its (cpr);