Explain how the discovery of microscopes has changed what we know. answer my question quickly

The main function of the microscope is to see microscopic objects, or small objects so small the naked eye can't see it. It magnifies the object so our eye can see it.
After discovering and improving the microscope, Robert Hooke discovered cells. This is just one example of how it changed the study of organisms. With the microscope, we could see and find microscopic life like bacteria and see the cells, shape, color, and other materials such as the organelles the organisms were made of.

Answer : romans built laws to manage the pollution which was lead by smoke produced by the factories.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.