Theodore Roosevelt served as the 26th President of the United States from 1901 to 1909. At the age of 42, he was, and remains, the youngest president in the country's history, followed by John F. Kennedy (43) and Bill Clinton (46). He took the oath of office on September 14, 1901, at the Ansley Wilcox House in Buffalo, New York, hours after the death of President William McKinley, who had been shot…