Because president Roosevelt died of cancer. Truman was his vice-President, so constitutionally he then succeeded Roosevelt.
Harry Truman, the Vice-president., became President at the death of President Roosevelt on April 12.1945.
Harry Truman was the U.S President in office when WWII was officially over. Franklin Roosevelt died of a heart attack in Warm Springs, Georgia just four months before the war ended.
Harry S. Truman, the 33rd President, took office after Roosevelt died near the end of the war.
First, it was Franklin Delano Roosevelt but after he died in the midst of his third term, his vice president Harry S. Truman took over.
Truman first replaced Henry A. Wallace as Franklin Roosevelt's Vice President.When Roosevelt later died, Truman replaced him as President.
FDR was followed in his presidency by Truman. Truman served as FDRs Vice president for three months during his fourth term in office. Truman took over in 1945. I think that's what your asking!
Franklin D. Roosevelt passed away on April 12, 1945. Vice President Harry S. Truman took over as president following Roosevelt's death.
Harry Truman was President of the United States. He presided over a democracy.
In the USA it was President Roosevelt. After the death of Franklin Roosevelt, it was Harry Truman.
Harry Truman yes, in 1948 with Harry Truman over Dewey
Franklin Delano Roosevelt died of a brain aneurysm in 1945 and was succeeded in the presidency by his Vice-president, Harry S Truman
Frankyn Delano Roosevelt was the president, until he died and Harry S. Truman took over