One of the natives was placed in stocks to humiliate them and this caused Palma to finally turn his back on the Spanish. The following year, two high members of the tribe were arrested for allegedly plotting to assassinate a high-ranking officer. That year there was severe lack of rain thus forcing the Quechan to raid another nearby tribe known as the Maricopa. When the Spanish’s first gifts arrived in 1780, they would be more of a bad omen than a sign of friendship as the livestock being herded to them would go and trample most of if not all the Quechan’s crops. This allegiance would soon sour as the bureaucracy of the Spanish Empire would cause major delays to the construction of the missions. Alongside the promise, de Anza gave Palma’s people horses, steel weapons, clothes, and iron as a token of allegiance.

He promised them to set up a mission where all people would live together instead of in a hierarchy. Once the initial contact had been made, The Quechan people seemed inviting toward Juan Bautista de Anza. Palma was given the Spanish baptismal name Salvador Carlos Antonio. The chief Palma and his three companions were baptized in Mexico City on February 13, 1777. On Anza's return from his second trip to Alta California in 1776, the chief of the tribe and three of his men journeyed to Mexico City to petition the Viceroy of New Spain for the establishment of a mission. The first significant contact of the Quechan with Europeans was with the Spanish explorer Juan Bautista de Anza and his party in the winter of 1774. The historic Yuman-speaking people in this region were skilled warriors and active traders, maintaining exchange networks with the Pima in southern Arizona, New Mexico, and with peoples of the Pacific coast. Its operations and the majority of its reservation land are located in California, United States. The federally recognized Quechan tribe's main office is located in Winterhaven, California. Members are enrolled into the Quechan Tribe of the Fort Yuma Indian Reservation. Despite their name, they are not related to the Quechua people of the Andes. The Quechan ( Quechan: Kwatsáan 'those who descended'), or Yuma, are a Native American tribe who live on the Fort Yuma Indian Reservation on the lower Colorado River in Arizona and California just north of the Mexican border. Yumas in 'United States and Mexican Boundary Survey.

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