Why did san francisco de los tejas as a mission?

San Francisco de los Tejas was established as a mission in 1690 by Spanish explorers to convert the Native American Tejas people to Christianity and to solidify Spain's territorial claims in the region. It served as a strategic outpost for Spanish colonization, facilitating trade and interaction with indigenous tribes. The mission aimed to promote agriculture and Spanish culture, but it faced challenges such as conflicts with local tribes and harsh environmental conditions, leading to its eventual abandonment in 1719.