Spanish Colonial Indian Policy and the Origins of the Historical Route to the Yuta Country The First Expedition of Juan Maria Antonio Rivera, June 1765
OFFICIAL SPANISH INTEREST in the Yuta country came, in part, as a result of Spanish colonial policies regarding relationships with semi- nomadic tribes. Spanish Indian policies dealing with sedentary tribes, which were largely considered peaceful, and semi-nomadic tribes, which were thought to be warlike, influenced the nature of trade with the two types of tribes. Identification of Indian groups along the Río Grande and in the Great Plains was made early in the period of exploration between 1539 and 1598.28 Nevertheless, the administration of the dual Indian policies would never be simple. Early Spanish explorers in New Mexico first encountered Indians of the Río Grande pueblos regularly trading agricultural products for buffalo hides, meat, and fat with tribes from the Great Plains.
Indeed, Spanish explorers noted that certain pueblos bordering on the eastern New Mexico plains, such as Taos, Picuris, Pecos, the Galisteo Basin pueblos, and Las Humanas, were sites where Plains Indians and people from the Río Grande pueblos came to trade their products.29 The Indians often met on a seasonal or annual basis, and doubtless Utes occasionally attended these fairs. Shortly after the establishment of New