Answer is:
if I am unhappy with what I have but I cannot find a trading partner because everybody else is happy with what they have
Answer is:
it can produce that good at a lower opportunity cost than its trading partner.
Answer is:
Trade can benefit everyone in society because it allows people to specialize in activities in which they have a comparative advantage.
Answer is:
countries should specialize in the production of goods for which they have a lower opportunity cost of production than their trading partners
Answer is: