Spanish explorer Vicente Yanez Pinzon, who had commanded the Nina during Christopher Columbus' first expedition to the New World, reaches the northeastern coast of Brazil during a voyage under his command. Pinzon's journey produced the first recorded account of a European explorer sighting the Brazilian coast; though whether or not Brazil was previously known to Portuguese navigators is still in dispute.
Pinzon subsequently sailed down the Brazilian coast to the equator, where he briefly explored the mouth of the Amazon River. In the same year, Portuguese explorer Pedro Alvares Cabral claimed Brazil for Portugal, arguing that the territory fell into the Portuguese sphere of exploration as defined by the 1494 Treaty of Tordesillas. However, little was done to support the claim until the 1530s, when the first permanent European settlements in Brazil were established at Sao Vicente in Sao Paulo by Portuguese colonists.