The country that is today officially the Socialist Republic of Vietnam (Cộng hòa xã hội chủ nghĩa Việt Nam) was once a part of French Indochina. After the Japanese occupation of the Second World War ended, the Việt Minh (who had fought the Japanese during the war) strongly opposed French re-occupation of the country, which rapidly brought about the First Indochina War (1946 to 1954). Ten years later, the Geneva Accords of 1954 effectively ended the war by establishing Indochina's independence from France, and established two nations out of the territory traditionally considered Vietnamese, the Democratic Republic of Vietnam in the north, and the State of Vietnam in the south. Within a year, the South Vietnam was established after Ngô Đình Diệm deposed Emperor Bảo Đại. His refusal to enter negotiations with North Vietnam over holding nationwide elections led to gradual disintegration of diplomatic relations between the two countries, and the start of the Second Indochina War (1959 to 1975). Vietnam was reunited in 1975 when the US and its allies withdrew all forces from South Vietnam, which was rapidly overrun when North Vietnamese troops shortly thereafter. The unified country was officially re-named the Socialist Republic of Vietnam, which it has remained to this day.