Final answer:
Pedro Alvares Cabral is the explorer who founded Brazil for Portugal after his fleet was blown off course on the way to India in 1500.
Step-by-step explanation:
The explorer who landed in Brazil after being blown off course and founded Brazil for Portugal was Pedro Alvares Cabral. He set sail from Portugal in 1500 with the intended destination being India. However, his fleet was taken off course and ended up on the shores of Brazil. Cabral claimed the new land for the King of Portugal, Manuel I. This claim was made possible partly due to the Treaty of Tordesillas, which had established zones of control between Spain and Portugal for new discoveries. Brazil fell on Portugal's side of the line, and thus its lands were rightfully claimed under Portuguese jurisdiction according to the treaty.
The explorer who inadvertently landed in Brazil and claimed it for Portugal was Pedro Alvares Cabral. In 1500, Cabral departed from Portugal with the initial objective of reaching India. However, his fleet was diverted off course, leading to the discovery of the eastern coast of South America, specifically Brazil. Pedro Alvares Cabral, recognizing the significance of his find, claimed the newfound land for the Portuguese crown, specifically King Manuel I.
The legitimacy of Cabral's claim was reinforced by the Treaty of Tordesillas, an agreement between Spain and Portugal that established demarcation lines dividing newly discovered lands. Brazil fell within the portion allocated to Portugal, justifying its colonization and governance by the Portuguese. This historical event marked the beginning of Portuguese influence in Brazil and set the stage for the country's colonial history.