Being linked to the dollar emerging country economies see the effect on their economy of a reduction in interest rates by the Fed. This is clearly evident in the Gulf countries and Middle East where the link has produced a looser monetary policy in a booming economy and only increases inflation which is already high in many countries. China, India and Russia are seeing increasing inflation as their currrencies are linked to the dollar and though a revaluation of their currency can reduce price of imports and lower overall inflation this is not an easy thing to do because in the case of China it increases the price of goods it exports to the US at the very time the US is in a recession.
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