During what period did the US expand its area by the greatest amount?

How do you determine is a foreign exchange market is efficient?

A) See if the market rates adjust quickly to new and relevant information. B) See if systematic profit opportunities are quickly eliminated. C) See if forward rates are equal to expected future spot rates. D) All of the above should be true if a foreign exchange market is efficient.

An increase in a country's saving rate will tend to cause which of the following in the long run?

A) a reduction in per capita real GDP B) an increase in economic growth C) an increase in the unemployment rate D) an increase in the rate of inflation