When a social crisis becomes particularly bad, it is called


A public issue

Explanation:

A public issue is an issue that is a source of problem or conflict for a social structure or culture that affects many individuals. This becomes a huge problem when the problem becomes too severe as it will begin to affect other members of the society.

Some examples of public issues are divorce, unemployment, insecurity, etc.

the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.