The United Nations Angola Verification Mission II (UNAVEM II), established May 1991 and lasting until February 1995, was the second United Nations peacekeeping mission, of a total of four, deployed to Angola during the course of the Angolan Civil War, the longest war in modern African history. Specifically, the mission was established to oversee and maintain the multilateral ceasefire of 1990 and the subsequent Bicesse Accords in 1991, which instituted an electoral process for the first time including the two rival factions of the civil war, the People's Movement for the Liberation of Angola (MPLA), the de facto government of Angola, with control of Luanda and most of the country since independence in 1975, and the National Union for the Total Independence of Angola (UNITA).