Congress made an agreement that slaves could stay for a certain amount of time then once that time was up they put a law in the constitution talking abut the band on slavery
War with Mexico and the alamo and it also sparked the transcendentalist era, and plus it was one of the earliest examples of civil disobedience by henry David Thoreau
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.