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What is Brazil's capital?

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The capital of Brazil is Brasília. It's located in the Federal District, which was carved out of the state of Goiás in the central plateau of Brazil. 
Brasília has been the capital of Brazil since 1960. It was planned and built specifically to be the capital city, and the process took 41 months. 
Brazil's most populated city is São Paulo. The country is made up of 26 states and the Federal District. It's the only country in the Americas with Portuguese as an official language. 