Americans were unhappy that all official documents had to be in Spanish, a language most of then were unwilling to learn. In addition, many were slaveholders who were upset when Mexico outlawed slavery in 1829
A group led by a lawyer named William Travis began calling for revolution. Another group led by Stephen Austin asked the Mexican government to reopen Texasto immigration and to make it a separate Mexican state so that Texas could run there own affairs
The Alamo defenders watched as General Santa Anna raised a black flag that meant "expect no mercy". When the general demanded that the Texans surrender, Travis answered with a cannon shot.