A world has to adopt a change that occurs in the International System. In the past, several major events brought changes in the International System. The two major wars, World War 1 and particularly World War II are responsible for the demolition of the old international system and gave rise to the new world order. After these changes, the world had to adopt the new structure of the International System. The Cold War emerged after World War 2, which brought major changes in the International System. Three major phenomena define the post-Cold War world. The first is the emergence of the US as a world superpower, and the second is the rise of China as a centre of global industrial growth. andAnd the third is the re-emergence of Europe as an immense and cohesive economic power.