Yes, he was the president, because President Roosevelt died, and Harry Truman took his place in result of his death.
Answer:
The Second Battle of the Marne caused the Central Powers to collapse. In July 1918, the Allies and Germans clashed at the Second Battle of the Marne. ... With the arrival of 2 million more American troops, the Allied forces began to advance steadily toward Germany. The war would soon be over.
Explanation:
Harry truman allowed for the use of Atomic bombs on Hiroshima and Nagasaki code named "little boy" and "fat man"
