 Complete the following phrase:  The Catholic presence in present-day Orange County dates to the 1776 establishment of Mission San Juan Capistrano, a Spanish mission founded by Father Junipero Serra and the Franciscan order. At the time the region was part of the Las Californias province of New Spain. In 1804 present-day Orange County became part of Alta California when Las Californias was split in two; Alta California then became part of Mexico when the latter gained 