Rwandan Revolution posed by the refugees until the 1990s, when a civil war initiated by the Tutsi-refugee "Front Patriotique Rwandais" (FPR) forced the Hutu government into negotiations. This led to a rise in Hutu extremism and the 1994 genocide, in which hundreds of thousands of Tutsi were killed before the FPR took control. The earliest inhabitants of what is now Rwanda were the Twa, a group of aboriginal pygmy hunter-gatherers who settled the area between 8000 and 3000 BC and remain in the country today. Between 700 BC and 1500 AD, a number of Bantu groups migrated into Rwanda and began clearing
Rwandan genocide or simply having a "Tutsi appearance". The RPF was making slow but steady gains in the north and east of the country, ending the killings in each area occupied. The genocide was effectively ended during April in areas of Ruhengeri, Byumba, Kibungo and Kigali provinces. The killings ceased during April in the "akazu" heartlands of western Ruhengeri and Gisenyi, as almost every Tutsi had been eliminated. Large numbers of Hutu in the RPF conquered areas fled, fearing retribution for the genocide; 500,000 Kibungo residents walked over the bridge at Rusumo Falls, into Tanzania, in a few days at the end