Between 1638 to 1769, the Iquitos and other native tribes of the Marañon rivers were obliged to settle down in various Missions (known as "reducciones" or reductions) founded and run by Jesuit missionaries from the Audiencia of Quito. The Jesuits settled in the major cities of the Audiencia of Quito, which was part of the Viceroyalty of New Granada at the time. During this period of nearly 130 years, 161 Jesuit missionaries worked to convert and educate the natives of the Amazon region. Among them were 63 criollos (white ethnic Spanish colonists born in the Audencia), 43 Spaniards, 32 Germans and Dutch, 20 Italians, 2 Portuguese, and 1 Frenchman. Their role in South America was to convert the natives of the Amazon Basin to Christianity. The Jesuits successfully gathered the natives living along the Marañon river into various Jesuit missions, where they were set to work at farming and other pursuits.