In the 1820s, Stephen Austin brought American settlers to Texas (then owned by Mexico and known as Texican) where they could purchase land for 12 cents an acre interest-free for 6 years with three caveats: (1) They had to become a Mexican citizen; (2) They had to learn Spanish; (3) They they had to have a good reputation and character. After awhile, the Mexican government became concerned about what was going on so far away in Texas. The settlers were becoming too independent and they wanted to invoke the American judicial system to resolve legal disputes. Ultimately, a war for independence from Mexico began. In 1836, Mexican forces (historians place estimates at a staggering number: between 1,800 and 6,000 soldiers) attacked the Alamo, which was defended by just 200 Texas volunteers. Amazingly, the Texans defended the Alamo for 13 days before being overwhelmed and just a few were spared. The survivors were ordered to tell other Texans they would suffer a similar fate if they continued to revolt. Two months later, Sam Houston led an attack on Mexican troops in San Jacinto declaring "Remember the Alamo!", which led to Mexico withdrawing and nine years later the U.S. annexing Texas.
Some Alamo history buffs were on the grounds in period attire demonstrating how the men defending the Alamo would have loaded their rifles. As I recall, they were expected to go through all the motions and be ready to fire in just 20 seconds. In addition to being strong willed and tenacious, the Texans must have been well trained to hold the Alamo for nearly 14 days. Remember the Alamo!