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The state was the successor to the State of Maranhão. While there were limited territorial changes, Maranhão was politically and economically restructured and its capital was moved from São Luís, in the Captaincy of Maranhão, to Santa Maria de Belém, in the Captaincy of Pará, which was raised to a unified state with Maranhão and had its name changed to Grão-Pará (English: Great wide river).
The purpose of creating this state was to stimulate economic activities.
1975 is the year of East Timor's Declaration of Independence and subsequent invasion by Indonesia. In 2002, East Timor's independence was fully recognized.