A country would have a comparative advantage to produce a good if the cost of producing this good, even if it produces efficiently, is higher than that of other countries.
Step-by-step explanation:
The Competitive Vantage Principle explains how an individual produces more commodities and uses fewer goods with a comparative advantage under freer trade.
For example, the comparative advantage of oil-producing countries in chemical products. Compared to countries that are not there, the local manufactured oil is a cheap source of chemicals.
It can produce products with fewer resources, which offers countries a comparative advantage at lower incentive costs. The PPF's gradient reflects the cost of output capacity. Improving one good's production means producing less of one.