I saw it too. I understand artistic license will always be utilized whenever there are historical gaps in facts. But I thought it was done well.
http://www.thealamo.org/ "Why is the Battle of the Alamo a significant historical event?
The Alamo became a rallying cry that helped the Texans defeat the Mexican Army at San Jacinto. Texas' independence laid the ground work for Texas' admission to the Union. Texas' admission to the Union led to a war between the United States and Mexico. At the end of the war, Mexico was required by the Treaty of Guadalupe Hidalgo to give the United States the area that now comprises California, Arizona, New Mexico as well as the parts of other western states. Debate over whether or not the territory gained from Mexico should be open to slavery helped divide the Union and led to the Civil War. The fact that the Union was prevented from splitting apart coupled the resources gained through the Louisiana Purchase (1803), the annexation of Texas (1845), the settlement of the Oregon question (1846), and the Mexican Cession (1848) set the United States on the path of becoming a world power."
Amazing all the small acts of courage that can have such ripple effects through time. Makes you think "what if" a lot. Would America be what it is today if history had played out different then? If America had not become a super power who could have stopped monsters like Hitler?
You never know what will be important.
Here is something to ponder, what if the Texas Revolution was lost? Did Santa Anna had territoral aspects i.e. trying to conquer more land? Mainly go against the US?