300
Santa Anna's men reached Texas in February, 1836. There were 184 men in a Spanish mission called the Alamo that stopped Santa Anna's men. While the men and the Alamo fought the Mexicans, this allowed these events to happen that helped Texas declare its independence from Mexico and set up a Republic of Texas on March 2, 1836.
What is the delay allowed Sam Houston to set up an attack near the San Jacinto River. It also allowed more Texans to sign up to fight the Mexican army.