What enabled President Truman and Allied leaders to issue the ultimatum above?

We call upon the government of Japan to proclaim now the unconditional surrender of all Japanese armed forces, and to provide proper and adequate assurances of their good faith in such action. The alternative for Japan is prompt and utter destruction.

A. The Battle of Iwo Jima

B. The Manhattan Project

C. Operation Torch

D. The Atlantic Charter

The correct answer is A) the Battle of Iwo Jima.

What enabled President Truman and Allied leaders to issue the ultimatum above was the Battle of Iwo Jima.

The ultimatum was issued as part of the Postdam Conference of July 26, 1945, when the Allied forces demanded the government of Japan to surrender and put an end to World War II. This important document was signed by British Prime Minister Winston Churchill, the Chairman of China Chiang Kai Shek, and US President Harry S. Truman. Japan did not surrender and President Truman decided to launch the atomic bomb over Hiroshima and Nagasaki on August 6 and 9, respectively.

The following enabled President Truman and Allied leaders to issue the ultimatum:

A. The Battle of Iwo Jima.

The Island of Iwo Jima in Japan was a strategic location because the US needed a place for fighter planes and bombers to land and take off when attacking Japan. Iwo Jima is a small island located 750 miles south of Tokyo, Japan.