Between 1683 and 1834, Jesuit and Franciscan missionaries established a series of religious outposts from today's Baja California and Baja California Sur into present-day California. The "cortes" (legislature) of New Spain issued a decree in 1813 for at least partial secularization that affected all missions in America and was to apply to all outposts that had operated for ten years or more; however, the decree was never enforced in California. Father Eusebio Kino missionized the Pimería Alta from 1687 until his death in 1711. Plans in 1715 by Juan Manuel de Oliván Rebolledo resulted in a 1716 decree for extension of the conquest (of Baja California) which came to nothing. Juan Bautista de Anssa proposed an expedition from Sonora in 1737 and the Council of the Indies planned settlements in 1744. Don Fernando Sánchez Salvador researched the earlier proposals and suggested the area of the Gila and Colorado Rivers as the locale for forts or presidios preventing the French or the English from "occupying Monterey and invading the neighboring coasts of California which are at the mouth of the Carmel River." Alta California was not easily accessible from New Spain: land routes were cut off by deserts and often hostile Native populations and sea routes ran counter to the southerly currents of the distant northeastern Pacific. Ultimately, New Spain did not have the economic resources nor population to settle such a far northern outpost.