http://ping.fm/kHbOH
Every person has some competitors , countries has many more . But America which is supreme power has many more, that is why its competitors are doing a lot to devalue dollar. American's policy really effects it a lot and its policy for the employment rate really effects it a lot as its employment decreases its business decreases and America fell in great economic crisis. Also its policy for Iraq and Afghanistan really effects its economy and the War against Terrorism is the main root of this tree of financial crisis. Also as oil priced in dollar and its value decreases also effects it, the situation of Egypt effects the world economy and as America is the supreme power it surrounds America a lot.