All of these contributed to the decline and fall of Rome EXCEPT

so they can defeat there oppenent

d

explanation:

d. hip hop

it was originated in the 70s while the harlem renaissance occured in the 1920s

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.