I agree that there were many factors, and I didn't say the Alamo was all about slavery, but apparently a large component.
Losing the ability to profitably harvest cotton was a major factor, according to this winner of that Texan historical prize.
Learning history as kid in Massachusetts, the fact that slavery was any part of the Texas Revolution was never mentioned.
> Texas Convention of 1836
> ... It also explicitly legalized slavery... [0]
Somehow we were never taught any of that. But I get it, it's nicer to wrap up history in a nice bow when teaching children.