The Balkan Peninsula has many different ethnic groups such as; Serbs, Croats, Bosniaks, and Albanians. This region has experienced ethnic conflict for thousands of years. The most recent conflict lasted from 1992 - 1995, when Serbia invaded Bosnia. Thousands of Bosniaks were killed by Serbian and Croatian forces because they were a different ethnic and religious group.
Rwanda is a small country in East Africa with two major ethnic groups, the Hutu and the Tutsi. In 1994, the Hutu controlled military and militia groups began killing Tutsis. Over a period of three months at least 800,000 Tutsis were murdered in one of the worst genocides in history.
Northern Ireland is part of the United Kingdom. The United Kingdom refers to Scotland, England, Wales, and Northern Ireland. The country is about evenly divided between Protestants and Catholics. The Protestants want to remain part of the U.K. and the Catholics want to be part of Ireland.
Protestants and Catholics formed gangs in Belfast and would kill each other. The Catholics also bombed government buildings and police stations. The violence was so bad in Belfast that they constructed large walls to separate neighborhoods. Since then both sides have signed a peace agreement.