In 1836, Texas fought and won its independence from Mexico. The Texans sought independence based on Mexico's violation of settlers' rights under Mexico Constitution. In March of 1836, the Mexicans massacred the Texans at the Alamo (including Davey Crockett, who came from Tennessee to help), but in April the Texans defeated the Mexican army and its General Santa Anna. Sam Houston was elected the first President of the Republic of Texas (it did not yet join the United States). General Santa Anna was released from captivity in November of 1836, and traveled to Washington, D.C., to meet with federal officials.<ref>http://www.pbs.org/wgbh/amex/alamo/timeline/timeline2.html</ref>
There were social changes in the early-to-mid 1800s worth noting. In 1826, the Lowell System consisted of factory-based cities, with the planning of the city and its housing based on the existence of jobs in the local factory. Lowell, Massachusetts, was the first example, where the jobs in its textile mills were filled by single, white women from surrounding rural areas.
There were numerous reform movements worth noting: prison reform which included the elimination of "debtors' prison" (imprisonment of people simply because they could not pay their debts); a movement to help the disabled; a movement to ban alcohol ("prohibition", or the "temperance movement") which began in 1826 and lasted until the 18th Amendment passed in 1919 to ban alcohol nationwide (it was later repealed by the 21st Amendment during the [[Great Depression]]); and many experimental communities ("utopias") established from the 1820s to the 1840s, based on a belief in perfectionism and attempts to create "perfect" communities, which were all unsuccessful. The largest religion founded entirely in America, the Church of Jesus Christ of Latter-day Saints (Mormon), began during the 1830s; Mitt Romney is one of its leading members and was the Republican nominee for president in 2012, when he was defeated by Barack Obama.