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.
European presence in Rio de Janeiro is as old as Brazil itself, dating back to 1502. Rio de Janeiro originated from parts of the captainships of de TomÃ© and SÃ£o Vicente. Between 1555 and 1567, the territory was occupied by the French, who intended to install a colony, France Antarctique.