Why can production only take place on or inside the frontier?

Production may occur anywhere on or within the frontier. ... Inefficient production means not all resources are being fully employed – it is still possible to increase production of both goods. This could occur during a recession or depression, or in a developing country. The PPF can be used to show tradeoffs.

Explanation:

carefully examine the map above. based on your knowledge of colonialism in africa, the area attributed to belgium on this map is most likely the democratic republic of the congo.

answer; acquired mainly during early childhood;