Trade theory considers the quantity of natural resources using grid concepts and the possibility to produce that in different countries will vary depending on the quantity of resources that exist in the country.
Trade theory to determine the amount of natural resources by using the concept of the possibility of production. In countries Will vary according to the amount of resources available in the country.
Considering the quantity of natural resources trade theory by using the concept of production possibility curve, which in other countries. Will vary according to the amount of production resources available in the country.