As such, comparative advantage is an important concept in global trade, and it's the reason many countries concentrate on trying to produce certain goods or services more efficiently than other countries.
In March 2013, the total cost of the Iraq War to date was estimated at $1.7 trillion by the Watson Institute of International Studies at Brown University. Some argue that the total cost of the war to the U.S. economy will range from $3 trillion to $6 trillion, including interest rates, by 2053, as described in the Watson Institute's report.
Cost of the War. The absolute cost of the World War II to America was $321 billion durung the War years (1941-45). This does not sound like much today, but it of course was inthe 1940s. And it does not include the cost of careing for wounded veterans after the War and GI-Bill expenditures.