Rwanda- One of the causes of conflict were a civil war in Rwanda between the "Hutu" and the "Tutsi", resulted in the death of millions. Like i stated above the Hutu and Tutsi were the important groups/people involved in the conflict. It was an on going battle between the two groups and it got out of hand to the point were Rwanda military forces set up road blocks and go house to house killing Tutsi and Hutu people non stop. Yes genocide did occur in Rwanda according to 10 stages of genocide the step that was used for this was #5. Organization the military wanted the fighting to stop so they took it upon themselves and slaughtered the two groups of people i can see a combination of polarization on there as well.
Democratic Republic of Congo- The cause of conflict is hunger, famine, disease nobody there is eating because there isn't any food to eat. There wasn't really a group involved it was more kind of natural. The slow burn of war has long ravaged the heart of Africa. Millions of people in the Democratic Republic of Congo, the largest member in a neighborhood wracked by upheaval, have died from prolonged insecurity, disease and hunger. Regional strife and internal power grabs between the government and armed groups have kept tensions high. The Impact it had on the region is there isn't any food in the region lots of disease and death still going on in the region. No i don't think genocide occurred but if you want to say there was genocide it could've been Denial because doesn't really say in the article there was a reason they could've been hiding the real reason there was disease, lack of food and minerals.
Sudan- Conflict erupted in Darfur when two Darfuri rebel movements the Sudan Liberation Army and the Justice and Equality Movement attacked government military installations in Gulu, the capital of Jebel Marrah Province. In the first years of the 21st century, the Sudanese government, aided by Arab militias known as the Janjaweed, carried out a campaign of terror, economic destruction, rape, and murder against the non-Arab "black Africans" of Sudan's Darfur region.The impacts of the events resulted in The UN Security Council, in three successive resolutions passed between 2004 and 2010, has imposed a sanctions regime that precludes UN member states from supplying arms, technical training, or assistance to any actor operating in Darfur. On March 31, 2005, the UN Security Council adopted Resolution. The steps of genocide being used were Discrimination, Dehumanization, Polarization, Persecution, and Extermination.