Do we have an imbalance of trade, where some nations dominate? If so who dominates world trade today? (2 examples)

How does this imbalance impact our world today? (2 examples)

1 answer

http://useconomy.about.com/od/tradepolicy/p/us-china-trade.htm

http://en.wikipedia.org/wiki/Balance_of_trade#United_States_Trade_Deficit