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). He brought new excitement and power to the office, vigorously leading Congress and the American public toward progressive reforms and a strong foreign policy. Roosevelt’s youth differed sharply from that of the log cabin Presidents. He was born in New York City in 1858 into a wealthy family, but he too struggled–against ill health–and in his triumph became an advocate of the strenuous life.