information:highlighting, structural:summarization
Independence

By the late 1950s, when other emerging nations across the African continent demanded their independence, a small group of São Toméans formed the Movement for the Liberation of São Tomé and Príncipe (MLSTP), which eventually established its base in nearby Gabon. Picking up momentum in the 1960s, events moved quickly after the overthrow of the Caetano dictatorship in Portugal in April 1974.

The new Portuguese regime was committed to the dissolution of its overseas colonies. In November 1974, its representatives met with the MLSTP in Algiers and worked out an agreement for the transfer of sovereignty. After a period of transitional government, São Tomé and Príncipe achieved independence on 12 July 1975, choosing as the first president the MLSTP Secretary General Manuel Pinto da Costa.

In 1990, São Tomé became one of the first African countries to undergo democratic reform, and changes to the constitution—including the legalization of opposition political parties—led to elections in 1991 that were non-violent, free, and transparent. Miguel Trovoada, a former prime minister who had been in exile since 1986, returned as an independent candidate and was elected president. Trovoada was re-elected in São Tomé's second multiparty presidential election in 1996.

The Party of Democratic Convergence won a majority of seats in the National Assembly, with the MLSTP becoming an important and vocal minority party. Municipal elections followed in late 1992, in which the MLSTP won a majority of seats on five of seven regional councils. In early legislative elections in October 1994, the MLSTP won a plurality of seats in the assembly. It regained an outright majority of seats in the November 1998 elections.