Texas Annexed by the United States

Texas Annexed by the United States

On March 1, 1845, President John Tyler signed into effect the joint congressional resolution providing for the annexation of Texas by the United States. The measure had been passed by the Senate on February 27, 1845, and by the House of Representatives on February 28, 1845.

No one asked the opinion of Mexico, which before the battle of San Jacinto on April 21, 1836, considered itself to be in possession of Texas. The annexation of Texas was one of the principal causes of the war between the United States and Mexico, which began in 1846. Texas became the 28th state of the Union on December 29, 1845.