How did cities eventually eliminate

problems ranging from epidemics to

factory pollution?

Preparedness to the upcoming situations by various measures eliminates problems ranging from epidemics to factory pollution

Explanation:

The civic authorities will propose a plan of action to control a outbreak of epidemics and also for the pollution that happens because of rapid industrialization. The local government will have separate departments to take care of these kinds of problems.

The health and sanitation department which generally does research and has a constant check on the kind of epidemics and they will devise a plan of action to control the outbreak. Same in the case pollution, the magnitude of pollution will be different ranging from air, water, soil, etc.

So a pollution control department will take care and constant monitoring is done to protect the environment and as well as people residing nearer to industrial site.