Why was the battle of san jacinto important?

Basically, the Texicans, under Sam Houston's command and joined by Stephen F. Austin and other interested land owners, rallied around the very few survivors of the Battle of the Alamo, San Antonio, and, due mostly to General Santa Ana's extended supply lines, defeated that larger Mexican force. This victory secured the southern extent of the Republic of Texas at the Rio Grande River. I'm pretty sure the year was 1836.