Did you ever get the answer? I'm doing the part 2
C. Had propaganda made that promoted them as being aligned politically and personally.
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.
It led to the fall of the Qing government.
It was commercially important. It allowed for the shipping of commercial goods and saved time + money.