Question

which of these events occurred first during the summer of 1945?○ the soviets joined the pacific war.○ truman gave japan an ultimatum to surrender○ the first atomic bomb was dropped○ the second atomic bomb was dropped

Explanation:

1. Truman issued the Potsdam Declaration (Japan's surrender ultimatum) on July 26, 1945.
2. The first atomic bomb was dropped on Hiroshima on August 6, 1945.
3. The Soviet Union declared war on Japan and joined the Pacific War on August 8, 1945.
4. The second atomic bomb was dropped on Nagasaki on August 9, 1945.

The earliest event is the surrender ultimatum to Japan.

Answer:

Truman gave Japan an ultimatum to surrender