Abstract
The European Union (EU) is an economic and political union composed of 28 Member States born February 7, 1992 by the Treaty of Maastricht. With a total population of over 500 million inhabitants, the EU is the world's leading economic power and generates 25% of global GDP. It is also a construction of a new genre that combines both features of the federation and confederation, while ensuring a European citizenship. Versus it, we can find the power of the United-State which is called "Superpower".
Through folder and some concrete examples, we will analyze and try to understand what makes the strength of each of the two blocks. Also, we see that for some years now, thanks to globalization, new countries are trying to take their game attracting multinationals, making them a great step forward.
