Theodore Roosevelt
FACTS
Fact 1: With the assassination of President William McKinley, Theodore Roosevelt, not quite 43, became the 26th and youngest President in the Nation's history (1901-1909).
Fact 2: Theodore Roosevelt, not quite 43, became the youngest President in the Nation's history.
Fact 3: During the Spanish-American War, Roosevelt was lieutenant colonel of the Rough Rider Regiment, which he led on a charge at the battle of San Juan. He was one of the most conspicuous heroes of the war.
Fact 4: Roosevelt steered the United States more actively into world politics. He liked to quote a favorite proverb, "Speak softly and carry a big stick. . . . "
Fact 5: Roosevelt ensured the construction of the Panama Canal.
Fact 6: He won the Nobel Peace Prize for mediating the Russo-Japanese War
source: https://www.whitehouse.gov/1600/presidents/theodoreroosevelt