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No (translator machine), but Ok lets try one piece at time. 
I would appreciate if you could show me what can be done in each of paragraphs:

1st paragraph:
Having been the early Brazilian republican period, nothing more than a Army dictatorship, already in 1891 from the unfoldings of the bubble of encilhamento and the 1st naval revolt, the country entered in a prolonged cycle of general instability marked by several rebellions, both civilian as military, which little by little undermined the regime in a such extent that by 1930, in the wake of the murder of his running mate, it was possible for the defeated opposition presidential candidate Getúlio Vargas, supported by most military, lead a revolt.

2nd:
Vargas and the military, who were supposed to assume the government temporarily to implement democratic reforms related to 1891's Constitution, closed the Congress and ruled with emergency powers, replacing the states' governors with their supporters. Under the Claiming of the broken promises of changing, in 1932 the oligarchy of São Paulo tried to regain the power and in 1935 the Communists rebelled, having both been defeated. Using the communist threat as an excuse, Vargas and military preclude elections launching a coup d'état in 1937, formalizing the then dictatorship. In May 1938, there was another failed attempt to take over the power by local fascists.

3rd:
In foreign policy, the success in resolving border disputes with neighboring countries in the early years of this period, was followed by a failed attempt to permanently exert a prominent role in the League of Nations, after its involvement in World War I. In World War II Brazil remained neutral until August of 1942, when the country entered in that war on the allied side after suffer retaliations undertaken by Nazi Germany and Fascist Italy, due the country have severed diplomatic relations with them in the wake of Pan-American Conference. With the allied victory in 1945 and the end of the Nazi-fascist regimes in Europe, Vargas's position became unsustainable and he was swiftly overthrown in another military coup, being the Democracy ""reinstated"" by the same army that had discontinued it 15 years before. Having returned to power democratically elected at the end of 1950, Vargas committed suicide in August 1954 amid a political crisis.

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