The nation of Croatia has a comparative advantage over Bono via in producing ham if Croatia's opportunity cost of producing a pound of ham is less than 0.8 pounds of cheese.
In a country, where the opportunity cost of producing a particular product is lower than that country has a comparative advantage in the production of a good.
For instance, if a country is skilled at making both cheese and ham, they determine how much labor goes into producing each good. If it takes one hour of labor to produce 10 units of ham and one of labor to produce 20 units of cheese, then this country has a comparative advantage in making cheese.
Hence, the answer is given and explained above.
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