News of the destruction of the French fort "created instant optimism and quickened religious fervor" in Mexico City. Spain had learned a great deal about the geography of Texas during the many expeditions in search of Fort Saint Louis. In March 1690, Alonso De León led an expedition to establish a mission in East Texas. Mission San Francisco de los Tejas was completed near the Hasinai village of Nabedaches in late May, and its first mass was celebrated on June 1.