The Causes
March 2, 1836, by people's convention the Mexican province of Texas declares its independence and its intention to become a republic.
April 21, 1836, by the decisive battle of San Jacinto, Texas wins its war for independence, in which it has been assisted by many volunteers from the United States.
May 14, 1836, Santa Anna, the Mexican President and general who had been captured after the battle, signs a treaty acknowledging the Texas Republic, extending to the Rio Grande River.
September, 1836, in its first election Texas favors annexation to the United States.
December, 1836, the Texas Congress declares that the southwestern and western boundaries of the republic are the Rio Grande River, from its mouth to its source.
The government of Mexico refuses to recognize the independence of Texas, and claims that as a province its boundary extends only to the Nueces River, which empties into the Gulf of Mexico, about 120 miles from the mouth of the Rio Grande.
This spring and summer petitions have been circulated through the United States in favor of recognizing the Republic of Texas. Congress has debated upon that and upon annexation. The South especially desires the annexation, in order to add Texas to the number of slave-holding States.
February, 1837, President Andrew Jackson, by message to Congress, relates that Mexico has not observed a treaty of friendship signed in 1831, and has committed many outrages upon the Flag and the citizens of the United States; has refused to make payments for damages and deserves "immediate war" but should be given another chance.
March, 1837, the United States recognizes the independence of the Texas Republic.
Mexico has resented the support granted to Texas by the United States and by American citizens; she insists that
