Nationalism

Nationalism refers to an ideology, a sentiment, a form of culture, or a social movement that focuses on the nation. It is a type of collectivism emphasizing the collective of a specific nation. While there is significant debate over the historical origins of nations, nearly all specialists accept that nationalism, at least as an ideology and social movement, is a modern phenomenon originating in Europe. Precisely where and when it emerged is difficult to determine, but its development is closely related to that of the modern state and the push for popular sovereignty that came to a head with the French Revolution in the late 18th century. Since that time, nationalism has become one of the most significant political and social forces in history, perhaps most notably as a major influence or cause of World War I and especially World War II with the rise of fascism, a radical and authoritarian nationalist ideology.

As an ideology, nationalism holds that 'the people' in the doctrine of popular sovereignty is the nation, and that as a result only nation-states founded on the principle of national self-determination are legitimate. Since most states are multinational, or at least home to more than one group claiming national status, In many cases nationalist pursuit of self-determination has caused conflict between people and states including war (both external and domestic), secession; and in extreme cases, genocide.