Amajor theme present in renaissance art, but not in medieval art, is

Humanism

Explanation:

Humanism was a philosophical stance that focuses on the role of human beings, both as individuals and as a society. This philosophy emphasized the importance of critical thinking and rationalism. This was a major idea that developed during the Renaissance, but that was not present during Medieval times.

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.