Why did santa Anna sign over Teaxas after the battle of san jacinton?

Santa Anna signed over Texas after the Battle of San Jacinto primarily to secure his own safety and to end the conflict. Following a surprise attack by Texian forces, his army was defeated, and he was captured. Facing dire circumstances and the threat of execution, he agreed to recognize Texas independence in exchange for his release. This decision ultimately led to the establishment of the Republic of Texas.