Getulio dornelles vargas established his dictatorship in brazil in 1937, and from 1938 through 1940 american diplomats and military planners were preoccupied with the possibility that brazil might ally herself with nazi germany. Such an alliance would have made fortress america vulnerable and closed the south atlantic to allied shipping. Fortunately for america, brazil eventually joined the allies and american engineers turned northeast brazil into a vast springboard for supplies for the war fronts. Frank d. Mccann has used previously inaccessible brazilian archival material to discuss the events during the vargas regime which brought about a close alliance between brazil and the united states and resulted in brazil's economic, political, and military dependence on her powerful north american ally. He shows that until 1940 the drive for closer union came largely from brazil, which wanted to offset the shifting alliances of the spanish-speaking countries and escape from british economic domination. American interest in brazil increased during the 1930's as the u.S.
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