What impact did the us development of the atomic bomb have on world war ii?
after the us dropped atomic bombs on two major cities in japan, japan surrendered.
after the us dropped atomic bombs on two major cities in germany, germany surrendered.
after the us dropped atomic bombs on major cities in germany and japan, both surrendered.
after japan dropped an atomic bomb on pearl harbor, the us entered world war ii.

The answere is (A) After the US dropped atomic bombs on two major cities in Japan, Japan surrendered. Germany has already surrended so the the war had  ended, but continued in the Pacific.  The United States dropped its first atomic bomb, on August 6, 1945,  on Hiroshima. As the Japanese did not surrender US decided to drop the second bomb, on Nagasaki, three days later.

the berlin blockade was an international crisis that arose from an attempt by the soviet union, in 1948–49, to force the western allied powers (the united states, the united kingdom, and france) to abandon their post-world war ii jurisdictions in west berlin. in march 1948 the allied powers decided to unite their different occupation zones of germany into a single economic unit. in protest, the soviet representative withdrew from the allied control council. coincident with the introduction of a new deutsche mark in west berlin (as throughout west germany), which the soviets regarded as a violation of agreements with the allies, the soviet occupation forces in eastern germany began a blockade of all rail, road, and water communications between berlin and the west. on june 24 the soviets announced that the four-power administration of berlin had ceased and that the allies no longer had any rights there.