Using data from the Harvard Institute for Economic Research, The Washington Post created this map that shows how ethnically diverse is a country.

Dark green countries are the more ethnically diverse. Such is the case of Canada, Mexico, several South American countries, including Peru, Bolivia, and Ecuador. The most ethnically diverse countries are located in Africa. In contrast, dark orange countries are more ethnically homogenous. That is the case of most European nations, China, Japan, South and North Korea, and Australia.