The authors of NSC-68 rejected a renewal of U.S. isolationism, fearing that this would lead to the Soviet domination of Eurasia, and leave the United States marooned on the Western Hemisphere, cut off from the allies and resources it needed to fend off further Soviet encroachments.
Brazil was by far Portugal's largest colony by area and population. Brazil was reached by the Portuguese in 1500. Due to the Treaty of Tordesillas in 1494, Portugal was allowed to colonize Brazil.
Brazil was inhabited by numerous tribal nations prior to the landing in 1500 of explorer Pedro Ãlvares Cabral, who claimed the area for the Portuguese Empire. Brazil remained a Portuguese colony until 1808, when the capital of the empire was transferred from Lisbon to Rio de Janeiro.