Today, April 21, is San Jacinto Day. It is a day to remember the victory by the Texians over Santa Ana at San Jacinto. The battle ensured that Texas could become an independent nation. It is also one of the most important battles in history.
The Republic of Texas existed from 1836-1845. Finally, as Sam Houston desired, Texas was annexed into the United States. The annexation of Texas led quickly to war between the U.S. and Mexico. The result of the Mexican-American War was a full surrender by Mexico. The Treaty of Guadalupe Hidalgo ceded an area of land that constitutes approximately one-third of the continental U.S. The area added included New Mexico, Arizona, Nevada, California and parts of Utah, Idaho, Wyoming and Colorado.
The Treaty of Guadalupe Hidalgo was the fulfillment of manifest destiny. The United States stretched from the Atlantic to the Pacific and filled the entire central area of the continent.
What Sam Houston and his small rag tag army did in avenging Goliad and the Alamo yielded the America we know today.