-Why Have Many European Countries Encouraged Immigration of Foreign Populations

-Why have many European countries encouraged immigration of foreign populations into their borders in the recent past?

A) They want to increase the diversity of their ethnic composition.
B) It is a requirement of the European Union.
C) They were experiencing low or negative growth, and needed immigrants to fill gaps in their labor force.
D) Many feel it would be a way to make up for the transgressions they committed against these people during World War II.
E) all of the answer choices are correct