Since the 1960s, much research in Sociology and History has disregarded the melting pot theory for describing interethnic relations in the United States and other counties. The theory of multiculturalism offers alternative analogies for ethnic interaction including "salad bowl theory", or, as it is known in Canada, the "cultural mosaic". In the 1990s, political correctness in the United States emphasized that each ethnic and national group has the right to maintain and preserve its cultural distinction and integrity, and that one does not need to assimilate or abandon one's heritage in order to blend in or merge into the majority Anglo-American society. In the 21st century, most second and third- generation descendants of immigrants in the United States continue to assimilate into broader American culture, while American culture itself increasingly incorporates food and music influences of foreign cultures. Similar patterns of integration can be found in Western Europe, particularly among black citizens of countries such as Britain, the Netherlands, France, Belgium, and Germany.