Teddy Roosevelt served as the 26th President of the United States from September 14, 1901, to March 4, 1909.

He first ascended to the presidency upon the assassination of William McKinley and completed McKinley's term before winning election in his own right in 1904.

Key Dates

Term Period| Details
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September 14, 1901 – March 4, 1905| Assumed office after McKinley's death; first Cabinet meeting on September 20, 1901 1
March 4, 1905 – March 4, 1909| Full elected term; reelected November 8, 1904 1

How He Became President

Theodore Roosevelt, then Vice President, took office abruptly in 1901 at age 42—the youngest president ever. Historical timelines mark his early actions, like naming the White House officially on October 17, 1901.

This unexpected start fueled his dynamic "big stick" style, shaping Progressive Era reforms.

Major Highlights

  • 1901-1903 : Handled Philippine events, met Booker T. Washington, backed Panama's independence.
  • 1904 : Won landslide reelection; introduced Roosevelt Corollary.
  • 1906 : Signed Pure Food and Drug Act; first national monument (Devils Tower).
  • 1907 : Managed Panic of 1907; launched Great White Fleet.

Roosevelt honored the two-term tradition by not running in 1908, paving the way for William Howard Taft.

Lasting Legacy

His nearly 7.5 years in office transformed U.S. policy on conservation, trusts, and global power—events still studied today.

TL;DR: President from 1901-1909, starting mid-term after McKinley's assassination.

Information gathered from public forums or data available on the internet and portrayed here.