Franklin D. Roosevelt, commonly referred to as FDR, was the thirty-second president of the United States. Largely owing to the home front uncertainties of World War II (1939–45), Roosevelt is the only U.S. president to have been elected four times. Roosevelt entered the White House in March 1933 at the height of the Great Depression (1929–41). The Great Depression, which began in the fall of 1929, was the worst economic crisis in U.S. history. Approximately 25 percent of the nation's workforce was.....