The origin, meaning and scope of nationalism is still debated. Yet it continues to be an ideology which preserves its importance in the 21st century. Most studies on the origin of nationalism point to 18th-century Continental Europe and the French Revolution, but it goes back to earlier times. By the 20th century, nationalism played a major role in the succession of empires to nation-states. Nationalism as an ideology that leads to wars, revolutions and social evolutions is one of the most important ideologies of today's world. Globalization theorists claim that nationalism will lose its importance in the postmodern era. Yet during the 20th Century nationalism went through an evolution and managed to integrate with different ideologies. Although there are different definitions about the scope and meaning of nationalism, it should be noted that; the history of the ideology of nationalism is as old as the history of humanity and that it will continue its adventure to the point where human history goes. This study will focus on the origin of nationalism, its meaning for societies, its scope and its dialectical relations with different ideologies in the post-modern era. Additionally, the arguments on nationalism will be analyzed and the roles that are played by the ideology of nationalism in various parts of the world will be discussed.
Keywords: Keywords: Nations, Nationhood, Nationalism, Identity, Nation State.