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 also has a large population of mixed European, mainly Portuguese, descent. In the late nineteenth and early twentieth centuries Brazil was the destination of many immigrants from Italy, Germany, and Spain. During the same era smaller numbers of immigrants arrived from Eastern Europe and the Middle East.