Which of the following is true about Rwanda? In the 1990s, its people suffered ethnic cleansing, but the United Nations was able to stop the violence. One ethnic group tried to eliminate the other in the 1990s, and the world failed to respond with force. The country was at peace in the 1990s until another invaded and committed genocide against all. A migration of the people escaping violent conditions in surrounding countries took refuge there in the 1990s.