What was the colonization society’s plan to do when slavery ended? what did william lloyd garrison think about slavery? how did he try to end it?

an era of negotiation.

is that an answer to your question?

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.