Answer:
Devalue its currency 
Step-by-step explanation:
Exchange Rate is the conversion rate of domestic & foreign currency. 
Eg $1 = _ € . 
Devaluation means deliberate fall in value of domestic currency in terms of foreign currency (increase in foreign exchange rate) , under fixed exchange rate by government. 
Eg : $1 = 5€ - change to - $1 = 7€ . This implies dollar can purchase less amount of euro , and has depreciated. 
However , this would also lead to reduce the cost of its exports in foreign (here European market) , because US $ has become cheaper in terms of their currency & hence so have been their goods.