(02.04 MC)Why did coins replace other mediums of exchange?

d. it adversely affected american productivity

is there multiple

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.

i think it’s a i hope that right : )