page_title: 1845 in the United States
section_title: January–March
hierarchical_section_title: 1845 in the United States / Events / January–March
context_page_description: Events from the year 1845 in the United States.
context_section_description: January 1 – The Cobble Hill Tunnel in Brooklyn is completed.
  January 29 – "The Raven by Edgar Allan Poe is published for the first time (New York Evening Mirror).
  February 1 – Anson Jones, President of the Republic of Texas, signs the charter officially creating Baylor University, which becomes the oldest university in the State of Texas operating under its original name.
  February 28 – The United States Congress approves the annexation of Texas.
  March 1 – President John Tyler signs a bill authorizing the United States to annex the Republic of Texas.
  March 3
  Florida is admitted as the 27th U.S. state (see History of Florida).
  Postal reform act of Congress standardizes nationwide mail rates.
  March 4
  The United States Congress passes legislation overriding a presidential veto for the first time.
  James K. Polk is sworn in as the 11th President of the United States.
caption: March 4: James K. Polk becomes President
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