Since the end of the 19th century, and throughout the 20th century, the world has undergone profound changes. But it was at the end of the 20th century, a new world emerged, where the advances of global capitalism and the free market - as a homogenizing project - had profound impacts on society, politics and culture, questioning the conception of identity, especially those historically rooted identities, that is, national identities. Like the concept of nationalism, globalization is not a recent phenomenon. However, the rapid changes experienced in the last decade of the century brought new problems for the nation-states. Faced with an increasingly multinational (or transnational) logic, the concept of nation was put into question, as well as the concept of individual. On the other hand, the idea of a worldwide network brought a supposed sense of homogenization of culture, politics, and, of course, economics. If, on the one hand, the globalizing discourse appears as a homogenizing process, on the other, it opens up the fragmentation of identities. Thus, discussing the national question in a world that is increasingly fragmented, and at the same time homogeneous, is a challenge for researchers in the humanities in general. If, on the one hand, the globalizing discourse appears as a homogenizing process, on the other, it opens up the fragmentation of identities. In this way, the book in the readers hands is a long term, in which it is possible to perceive the contradictions of this extremely integrated, and at the same time fragmented world.