The Alamo was a major battle in texas, when texas overcame alamo it gave them experience, strength, training and the ability to learn from that battle.
More Texans became involved in the quest for independence because they viewed the Alamo as a brutal and unnecessary slaughter by the Mexican government. The brutality of the Alamo and the loss of folk heroes like David Crockett united older citizens and younger citizens in the cause. The United States also increased its support for Texas at this time and Texas was able to unify and organize itself for battle. Texas became inspired after the cause and used the Alamo as their motivation- even generating a battle cry based on the incident. Texas was also able to form a new independent government and draft its own constitution.