What is it called when a country makes the products that it makes best?

Why is there so much emphasis on exact definitions in economoics? How can I calculate the duration of bond with interest income tax? What signs of business and commerce does Mendelssohn notice on the houses? How much is 15 euro for dollars? What is the price of one nations currency in terms of another nations currency? Why were the Chinese blamed for Americas poor economy? Which part of the US government is responsible for making proper adjustments to the economy and setting the appropriate interest rates for short-term and long-term debt? What is difference between Autonomous Expenditure and Induced Expenditure? How does specialisation address the issue of scarcity? How much a 1989 East Caribbean States quarter worth? Example of scarcity? How do National Income and per capita income serve as indicators of development? Top ten richest people in North Korea year 2009? What are some recommended books on microeconomics for beginners? What are the factors which lead to the failure of national development? What helps economics judge the overall condition of a particular countrys economy? What do the terms Ford-ism and Neofordism mean? Can you earn nectar points on the black market? How much would 1000 in 1840 be worth today? Who takes charge of sale of goods in a public?