In the 1990s in Angola, the last decade of the Angolan Civil War (1975–2002), the Angolan government transitioned from a nominally communist state to a nominally democratic one, a move made possible by political changes abroad and military victories at home. Namibia's declaration of independence, internationally recognized on April 1, eliminated the southwestern front of combat as South African forces withdrew to the east. The MPLA abolished the one-party system in June and rejected Marxist-Leninism at the MPLA's third Congress in December, formally changing the party's name from the MPLA-PT to the MPLA. The National Assembly passed law 12/91 in May 1991, coinciding with the withdrawal of the last Cuban troops, defining Angola as a "democratic state based on the rule of law" with a multi-p