The native populations of Portuguese America were essential for the implementation of the Portuguese colonial project. Their labor was indispensable in constructing the colony, and political alliances with native peoples ensured the success of the conquest at several crucial moments, and only with the aid of native knowledge it was possible to occupy the land and advance the conquest of the immense territory that became known as Brazil. In this sense, peace was a necessity. Yet, in highlighting the centrality of Indians in the settlement of the Portuguese colony in the Americas, it must also be recognized that the relations established there between Portuguese conquerors and native populations were also historically marked by tension and violence. A war of extermination, often masquerading as a “just war,” and slavery became inseparable parts of colonial strategy. Moreover, access to land and the use of indigenous labor could both constitute secure indicators of success in the conquest of Portuguese America. In the process of colonization the Portuguese Crown was confronted by various forms of native resistance and by the differing interests of diverse colonial agents. During the 17th and 18th centuries the Crown faced tensions, disputes, and contradictions in relation to the slavery and freedom of Indians and the way it solved these conflicts revealed the configuration of its indigenist policy.