Has there ever been a country, state or city of considerable size that only had one ethnicity/race and banned/drove away others?

by Bob_Swarleymann
Daeres

Sorry, we don't allow throughout history questions. These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again.