Under what circumstances will there be no opportunity for mutually advantageous trade between two countries?

Question

Quizplus · Accepted Answer

When comparative costs are the same between two countries, there is no opportunity for mutually advantageous trade because neither country has a comparative advantage in producing any good more efficiently than the other. Comparative advantage is the driving force behind trade benefits, allowing countries to specialize in producing goods at lower opportunity costs and trading them.

Under What Circumstances Will There Be No Opportunity for Mutually