Capitalism is an economic system and not a political system. Countries thus do not enshrine capitalism as a part of their constitutional framework, nor do they typically limit policy choices to capitalism. However, the vast majority of countries in the world use capitalism as their dominant economic system, including the United States, Canada and Mexico, all of the 27 countries of the European
. Union. World trade overall, and the international economy is capitalist overall. International prices and company values are established in stock and mercantile exchanges.