During the war, RENAMO proposed a peace agreement based on the secession of RENAMO-controlled northern and western territories as the independent ''Republic of Rombesia'', but FRELIMO refused, insisting on the undivided sovereignty of the entire country. An estimated one million Mozambicans perished during the civil war, 1.7 million took refuge in neighbouring states, and several million more were internally displaced. The FRELIMO regime also gave shelter and support to South African (African National Congress) and Zimbabwean (Zimbabwe African National Union) rebel movements, while the governments of Rhodesia and later South Africa (at that time still apartheid) backed RENAMO in the civil war. The civil war took about 600 000 lives, by 1990, the number increased to over a million people.