Although it already existed well before thanks to primitive trade and migrations, globalization has become a major factor in world organization since the 20th century. With the creation of transnational companies, intergovernmental and non-governmental organizations, political and economic associations, new powerful actors have appeared who cannot be left aside in the decisions of States and whose influence can, according to some, threaten the authority of nation states. We can indeed think that globalization causes the end of borders between countries and, what is more, that it creates a kind of universal society in which the sovereignty of States is no longer the main authority. However, this essay will attempt to demonstrate that globalization does not undermine the sovereignty of states, but in fact leads to its transformation and a new variety of nations. To prove this I will first define the main key words then focus on the different arguments on the effects of globalization and finally I will demonstrate that globalization has led to a transformation of the concept of state sovereignty. Globalization has several definitions, as Andrew McGrew points out. He uses four different ones in order to obtain a more complete definition. Thus, globalization is defined as "the intensification of global social relations that connect distant localities such that local events are shared by events occurring miles away and vice versa", "the integration of world economy”, “deterritorialization – or growth of supraterritorial relations between people” and finally as “compression of space-time” (Giddens, 1990, p. 21, Gilpin, 2001, p. 364, Scholte, 2000, p. 46, Harvey, 1989, cited in Mc...... middle of article...... Politics: A New Introduction London, Routledge (Strange, S. (1996), The withdrawal of the State: The Diffusion of Power in the World, Cambridge: Cambridge University Press Strange, S. (1994), “Wake up Krasner!,” Review of International Political Economy, Summer 1994, 1 (2). ), pp. 209-20, Taylor and Francis, Ltd. Weiss, L. (1997), “Globalization and the Myth of the Powerless State”, in New Left Review, September-October, 225 (1), pp. 3-27 [Online]. Available at: http://newleftreview.org/I/225/linda-weiss-globalization-and-the-myth-of-the-powerless-state (Accessed March 4, 2014). Willetts, P. (2011), 'Transnational Actors and International Relations' Organizations in Global Politics' in Baylis, J., Smith, S. and Owens, P. (eds.) The Globalization of World Politics. An introduction to international relations. 5th ed. Oxford: Oxford University Press