Ed A. Munoz
A papal bull proclaims Spainâ€™s legal right to most of the New World, including the trans-Mississippi West.
Spanish conquistador Francisco Vasquez de Coronado explores Arizona, New Mexico, Texas, Oklahoma, and Kansas.
Spanish explorer Juan De Onate establishes Santa Fe, New Mexico. Spanish captain Juan de Ulibarri ransoms Picuris from Cuartelejo Apache in western Kansas.
Spanish Lieutenant-General Don Pedro de Villasurâ€™s French reconnoi-tering expedition suffers military defeat by Pawnees at the confluence of the Platte and Loup rivers in Nebraska.
From September 10 to 15, Franciscan missionaries Francisco Atanasio Dominguez and Silvestre Velez de Escalante reach La Vega de Santa Cruz, near Jensen, Utah, and approximately 100 miles from the Utah, Colorado, and Wyoming tristate border.
Spanish American entrepreneur Manuel Lisa establishes the fur-trading outpost Fort Raymond at the confluence of Yellowstone and Bighorn rivers in Montana.
The mountain man rendezvous is held at the confluence of Burnt Fork, Henryâ€™s Fork, and Birch Creek near present-day McKinnon, Wyoming, and within then-Mexican territory.
The mountain man rendezvous is held at Hamâ€™s Fork, near present-day Granger, Wyoming, and within then-Mexican territory.