Geographical reasons
San Antonio, being the site of many important battles during the Texas Revolution, has become a very prominent location in the history of Texas. Later, San Antonio became a large part of the US economy and also the American Civil War. Because of this, three railroads, the Galveston, Harrisburg, and San Antonio Railways, were built through San Antonio in 1877. The railroads allowed San Antonio much more opportunities, so funds were spent in order to grow San Antonio in order to maximize the possible opportunities.