The War for Texas Independence began as Mexican rule over Texas tightened in the 1830s. After the Mexican government abolished slavery and increased tariffs, Texians declared independence from Mexico in 1836. This led to several battles, including the famous stand at the Alamo where Texians were defeated by Santa Anna's Mexican army. However, Sam Houston later defeated Santa Anna at the Battle of San Jacinto, allowing Texas to gain independence as the Republic of Texas.