Why was the Alamo located where it was?

The Alamo was built in the early 18th century by the Spanish as a mission, named Mission San Antonio de Valero, to spread Catholicism among the indigenous peoples of the area. The mission was located along the San Antonio River, which was a vital transportation route for the Spanish. The area was also seen as strategically important due to its proximity to Native American settlements. By establishing a mission in this area, the Spanish could ensure their presence in the region and further their religious and colonial objectives.