 The presence of Dutch, French, and English explorers in the estuary of the Amazon River has concurred for the settlement of Portuguese expeditionaries in the current territory of the State of Pará, and also for the expedition of Francisco Caldeira Castelo Branco which, in 1616, has founded the city of Belém.After the foundation of the captaincy of Grão Pará, the foreigners were gradually expelled by the government, by means of various expeditions which had as goal to destroy the settlements created.Among these expeditions, the one headed by captain Pedro Teixeira reached for the first time (in 1626) the Tapajós River.