Progress for the community during the next half century was slow, for San Antonio was on trails seldom traveled and was brought into little contact with the outside world. The missions established earlier in the century prospered, expanded and then declined. In 1793-94 they were secularized and ceased to function as church settlements. Then followed a period of waning Spanish religious and political influence. In 1811 Mexico revolted against Spain and San Antonio was occupied several times, alternately by Mexican Revolutionists and Spanish Royalists.
In 1820 Moses Austin, a Connecticut Yankee living in Missouri, left his home and traveled to San Antonio, seeking permission of the Spanish authorities, still in power, to establish a colony of Americans in Texas. After Austin’s death from hardships encountered during his trip, approval was granted his plan and it was carried out by his son, Stephen F. Austin. The years 1821 to 1836 saw a flood of Anglo-American immigration pouring in.
Mexico achieved her independence from Spain in 1821 and San Antonio and Texas came under the domination of the newly formed Mexican government which put forth inconsistent confused policies. The earlier liberal grants to the Anglo-Americans were questioned. Following a series of revolutions begun in 1829, unscrupulous rulers successfully seized power in Mexico. Their unjust acts and despotic decrees led to revolution in Texas. The Texans formed an army, and in November 1835 established a provisional government.
In 1836, at the former mission San Antonio de Valero, the famous battle of the Alamo was fought. W. B. Travis, James Bonham, James Bowie, David Crockett and some 180 Texans held off, from February 23 to March 6, the Mexican army of more than 5000 troops under General Lopez de Santa Anna. The Mexicans finally broke over the mission walls on the morning of March 6 and bayoneted or knifed the entire garrison. Santa Anna was decisively beaten by Texans under General Sam Houston at the battle of San Jacinto forty-six days later. Following this San Antonio came under the rule of the newly formed Republic of Texas.
The year 1845 saw the annexation of Texas to the United States. In 1861, during the war between the States, Texas seceded from the Union. New times began in 1865 at the close of the Civil War. San Antonio became the center of a cattle empire. Longhorns were driven northward up the trails to market; mile-long wagon trains from Mexico began to come through the city. The Southern Pacific Railroad was constructed through this section in 1877. In 1898 the Spanish-American War again stimulated military activity in San Antonio and Colonel Theodore Roosevelt trained his Rough Riders at the site now marked by Roosevelt Park.