He was the U. S. Vice President when President F. D. Roosevelt died.
Truman was Vice President in Franklin Roosevelt's fourth term. When Roosevelt died, Truman became President.
Truman was FDR's Vice-President when FDR died in office.
Truman was FDR's Vice-President when FDR died in office.
April 12, 1945 was the date the Roosevelt died and Truman became President.
He became president in 1945.
April 12, 1945.
As the Vice President he became President after the death of FDR.
April 1945
2009
Because He didn't know how to become president at the time
He was Vice President and Roosevelt died in office.
he became president by Franklin d Roosevelt