Which of these happened when the united states dropped the first atomic bomb ? a. the formation of the iron curtain was announcedb. soviets promised to declare war on japanc. united states established a containment policyd. japan surrendered

d. hip hop

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

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.