Governments use monetary policy in order to: A. punish citizens who refuse to pay taxes and follow regulations
B. reduce taxes on the country's most successful businesses
C. prevent inflation and control the price of goods in the country
D. make sure businesses do not harm citizens or the environment

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.

Complementary goods. they go together, thats why one price increase and the others demand increases