United States. Central Intelligence Agency, CIA World Fact Book, 2004 — Guinea-Bissau (2004)
“ Since independence from Portugal in 1974, Guinea-Bissau has experienced considerable upheaval. The founding government consisted of a single party system and command economy. In 1980, a military coup established Joao VIEIRA as president and a path to a market economy and multiparty system was implemented. A number of coup attempts through the 1980s and early 1990s failed to unseat him and in 1994 he was elected president in the country's first free elections. A military coup attempt and civil war in 1998 eventually led to VIERA's ouster in 1999. ”
