The two countries of Yastrzemskistan and Conigliarona are fierce but friendly rivals in every way: sports, music, cuisine, and especially economics. The two countries have long debated which is richer. They have agreed to ask you, a renowned expert in Macroeconomics, to determine which country is richer. Since you know nothing about these countries (in fact, you have never heard of them before and it doesn't matter to you which is richer), you have asked each country's President to submit to you two pieces of information to make your determination (to be clear, it will be the same two pieces of information from each country). What information will you request from each country? Explain how you will use that information to determine which of these countries is richer.