Re: Is the world economy dependent on the American economy?
Yes for sure. Only dollar is used to buy petroleum products, until and unless we stop buying petrol with dollars we are dependant on american economy. Nobody knows the real value of dollar until that. wondering is dollar a positive value or negative? 
Why have a doubt? It is a negative value, thats why it is called the 'PetroDollar'. It is a clever scam.