Answer:
Mercantilism and Absolute, Comparative Advantage
Step-by-step explanation:
Theories of International trade study the exchange of goods, services, factors, capital among different countries.
Two theories of international trade, claiming important role of government in international trade, are:
Mercantilism : This theory states that an economy can prosper with wealth by accumulating maximum gold & silver reserves, by increasing exports & decreasing exports. It also suggests that government should play this role of imports discouragement, exports encouragement to maintain trade surplus & hence wealth.
Theories of Absolute & Comparative Advantage ; given by Adam Smith & Ricardo suggest that : Economies having absolute or comparative advantage in production of a good, of producing the good at a lower explicit cost or opportunity cost respectively - should produce & export the good of their advantage & import the other good (from economy having advantage in that). Government's role in this is highlighted as a provider & facilitator of free trade, without any trade restrictions. Then only international trade will be globally beneficial, this is evident from WTO' s encouragement of free trade.