Latin America during World War II on the battlefield in Europe was divined after the Casablanca Conference. The President of the U.S., Franklin D. Roosevelt on his way back from Morocco met the President of Brazil, Getulio Vargas, in Natal, Rio Grande do Norte, this meeting is known as the Potenji River Conference, and defined the creation of the Brazilian Expeditionary Force. In 1940, after he expressed his concern to President Franklin D. Roosevelt over Nazi influence in Latin America, Nelson Rockefeller of the famous family was appointed to the new position of Coordinator of Inter-American Affairs (CIAA) in the Office of the Coordinator of Inter-American
Vargas Era grievances with ruling regime in the Northeast and Rio Grande do Sul, Getúlio Vargas chose João Pessoa of the Northeast state of Paraíba as his vice-presidential candidate in 1930. With the understanding that the dominance of the landowners in the rural areas was to continue under Liberal Alliance government, the Northeastern oligarchies were thus integrated into the Vargas alliance in a subordinate status via a new political party, the Social Democratic Party (PSD). As a candidate in 1930, Vargas utilized populist rhetoric to promote middle class concerns, thus opposing the primacy (but not the legitimacy) of the paulista coffee oligarchy