Theodore Roosevelt was sworn into office when he was 42 years old in 1901. This made him the youngest person to ever become the President of the US.
The 25th President of the United States was William McKinley. President McKinley was elected in 1896, reelected in 1900 and was in office from March 4, 1897 until September 14, 1901 when he was assassinated.
Theodore Roosevelt was the Vice President of William McKinley. When McKinley was assassinated and died on 14 September 1901, Roosevelt became President. He was 42 years of age, the youngest American to become President.
1901 was not an election year. In 1900, William McKinley won a second term.
Theodore Roosevelt served almost two full terms as US President (1901-1909). He became President due to the assassination of his President, William McKinley.
January 20, 1941 was the date that FDR began his third term as president.
It has happened twice: Lincoln 1865, McKinley 1901.
President Obama's term began January 20, 2009.
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He was elected in to the Vice Presidency with William McKinley in the 1900 election, and assumed the Presidency when McKinley was assassinated in 1901. TR was elected as President in the 1904 election, and although eligible, did not seek re-election in 1908. He later regretted this choice and ran unsuccessfully as a third party candidate in 1912.
Obama's second term began on January 20, 2013.
US President Theodore Roosevelt served as US president from 1901 to 1909. As the vice president under President McKinley, he began as the US president in September of 1901. His last year in office was 1909. based on these numbers, it can be said he served for 8 years as US president.
Harry Truman began his second term that year.