massacre – n. the violent killing of many people
region(s) – n. a part of a country or of the world that is different or separate from other parts in some way
qualified as – v. had all the necessary qualities to be thought of or described in a particular way
revoke – v. to officially cancel the power or effect of something
perpetuate(d) – v. to cause something that should be stopped, such as a mistaken idea or a bad situation, to continue
aggravate(d) – v. to make an injury or problem more serious or severe