The correct answer to this open question is the following.
Missions in California.
Since 1769, Spanish Mission appeared in the territory of California.
Fray Junípero Serra was a renowned priest, a Franciscan missionary, opened the San Diego mission in California, where priests evangelized Native American Indians into Catholicism.
Another Franciscan mission established in California was the one named San Antonio de Padua, in Monterey, California. It was established in 1771. It was also founded by Jinípero Serra.
In the case of Texas, one of the most renowned missions is the Alamo, in San Antonio, Texas. It was founded in 1781 by Spanish Fray Antonio de Buenaventura Olivers. It was used to evangelize people in the Texas territory into Catholicism.
Another important mission was San Juan Capistrano, founded by the Franciscans in 1716 in the east part of Texas.
In New Mexico, the Spanish priests founded the San Miguel Mission in 1610, in Santa Fe. There, they built a small church that is considered to be the oldest church in the United States territory. Another important Mission was the San Francisco de Asis Mission, built-in 1772, in Taos, New Mexico. It was a place where Indians received instruction on the Catholic religion and other educational activities.
