(mc)the diagram below shows events that took place in the spring and summer of 1945:

a timeline diagram runs from left to right with four boxes. the first box reads, germany surrenders to end the war in europe. the second box reads, the u.s. conducts its first successful test of an atomic bomb. the third box reads, potsdam conference is held by the allied powers. the fourth box has a question mark.

which of the following completes the diagram?

the united states drops two atomic bombs on japan.
soviet premier stalin refuses to aid the u.s. effort to invade japan.
the soviet union conducts its first successful test of an atomic bomb.
the allied powers agree to use atomic weapons to force a japanese surrender.

A) The United States drops two atomic bombs on Japan

The territory (together with a part of Florida) was declared as Spanish territory by Ponance de Leon in 1512, but the first Europeans that paid the territory a visit never cared to name it. Nor was it colonized by any Spaniards, It was largely just proclaimed for a future that never came. But as French settlers arrived in 1562, they were soon thrown out by the Spaniards. However it was during this brief time that "Carolina" first was named, and the name referred to King Charles IX of France. The territory was thereafter left to native Americans until King Charles II of England, after the English Restoration, in 1660 he gave all land between the 34th and 36th parallels to eight Englishmen. The territory was named after the English king instead, Which however had no impact on the spelling. In 1729 British politicians regretted this gift and redeemed the heirs of the first eight British inhabitants. Now the carolina became divided into North Carolina and South Carolina, which both became British colonies. Both the new colonies were among the thirteen first states of the United States.