What was the cause of the beliefs expressed in the quote? soviet union declared war on japan atomic bomb dropped on nagasaki unconditional surrender of japan unconditional surrender of germany?

If this question has the same quote as the ones posted before, then the answer would be the second option which is: atomic bomb dropped on Nagasaki. 

> The bombings in Hiroshima and Nagasaki happened on the 6th day of August in 1945 during the WWII that falls in the years 1939-1945. It was an American B-29 bomber, the world's first atomic bomb, deployed over the Japan's City, Hiroshima. Three days after, a second B-29 dropped another A-bomb on Nagasaki, killing roughly, 40,000 people.

As a consequence to the bombings, Japan’s Emperor, Hirohito announced his country’s unconditional retreat in World War II over a radio, addressed on the 15th of August.

Your answer is a , hope that