By the late 1800s, had become a powerful idea in Europe.
O neutralism
O fundamentalism
O pacifism
O nationalism

Answer is in the file below

cutt.ly/rzNrBcz

d) iowa i believe is the answer

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.