This document discusses multiculturalism and the existence of multiple cultures within countries. It notes that the discovery era marked the beginning of population movements between continents. It also mentions that May 21st is World Day for Cultural Diversity, which recognizes the importance of culture and cultural diversity. Some examples of multicultural countries given are Canada and Brazil. The document discusses how multiculturalism implies claims and achievements for minorities like women, black people, indigenous people, homosexuals and others. It also outlines some principles and potential problems of multiculturalism.