The document discusses the Spanish mission system in North America. The Spanish established missions along their northern border to convert Native Americans to Catholicism, develop the borderlands, and represent Spanish rule. Missions included religious communities located near water with amenities. They taught Indians agriculture and religion, though some resisted. Presidios were military bases, while civilians lived in towns and ranchos near the missions and presidios. Missions were also established in New Mexico and Texas, though the Pueblo Revolt of 1680 forced the Spanish out of New Mexico temporarily.