Raison pou Augmentation Dollar

The boom in North American oil production and the crash in the prices of oil have also helped boost the dollar value. Because oil is priced in dollars, and you can now buy more of it with the same number of dollars, it has the effect of increasing the dollar's purchasing power relative to other currencies used to buy oil.

Falling prices and rising oil production have also helped improve the U.S. trade balance, by reducing the number of dollars sent abroad to pay for imported oil and raising the export volume of refined products such as gasoline. The improved trade balance means more dollars stay at home, tightening the supply outside the U.S.