Spain and Portugal agreed to a demarcation line in the Atlantic, a diplomatic framework later used by Portugal to justify claims to parts of South America that became Brazil.
Pedro Álvares Cabral’s fleet reached the coast of present-day Brazil, initiating Portugal’s formal contact with the territory later organized as Portuguese America.
A second mass and the erection of a royal cross marked an act of symbolic possession; Pero Vaz de Caminha’s letter to King Manuel I was dated the same day, reporting the “finding” of the land.
King João III tasked Martim Afonso de Sousa with a major expedition to patrol the coast, confront foreign interlopers, and start more systematic colonization efforts.
Martim Afonso de Sousa founded São Vicente, widely regarded as the first permanent Portuguese settlement in Brazil, providing an early administrative and economic base on the southern coast.
To reduce costs and accelerate settlement and defense, João III divided much of the coast into hereditary captaincies (capitanias hereditárias) granted to donatary captains.
A crown ordinance (Regimento) set out detailed rules to guide a centralized colonial administration, including land grants, justice, defense, and relations with Indigenous peoples—carried to Brazil with Tomé de Sousa.
Tomé de Sousa arrived to implement a centralized government (Governo-Geral) and founded Salvador as the colonial capital, strengthening royal authority over the scattered captaincies.
Manuel da Nóbrega led the first Jesuit contingent to Portuguese America, embedding missionary activity and schooling within the new colonial administration’s early structure.
The Diocese of São Salvador da Bahia de Todos os Santos was established as the first Catholic diocese in the colony, formalizing ecclesiastical governance centered on the capital.
Jesuits inaugurated a college and mission on January 25, a settlement that became São Paulo—an important inland hub for missions, labor systems, and later bandeirante expeditions.
A French colony was established in the Rio de Janeiro region, becoming a major strategic challenge that pushed Portugal to intensify settlement and military efforts in the south.
Portuguese forces destroyed the main French fortification on Villegagnon Island, a key step toward eliminating France Antarctique, though conflict in the region continued for years.
Estácio de Sá founded the city of São Sebastião do Rio de Janeiro, establishing a permanent Portuguese base to defeat remaining French forces and secure Guanabara Bay.
Portuguese forces imposed a decisive defeat on French colonists and their allies, ending the France Antarctique episode and consolidating Portuguese authority in the Rio de Janeiro region.
From São Paulo, bandeira expeditions became a defining 17th-century institution—often violent slave-hunting and exploratory raids that helped extend Portuguese influence beyond the Tordesillas line.
The crown reorganized administration by separating northern territories as the State of Maranhão (with its own capital at São Luís) alongside the State of Brazil, reflecting defense and governance challenges across a vast coastline.
Dutch West India Company forces seized Salvador, the colonial capital, demonstrating the vulnerability of Portuguese Brazil during the Iberian Union and disrupting Atlantic sugar-and-slave routes.
A large Iberian expedition retook Salvador from Dutch forces, restoring the capital to Portuguese control and shaping subsequent fortification and defense priorities.
Founding and colonial development of Portuguese Brazil (1500–1700)
