How was sanitation the greatest problem facing urban areas in the late 20th century?

There was diseases going around quickly,and rapidly. Because surgeons was not washing there hands between surgeries and there tools.Also they smoked in the OR (operating room) they didn't use gloves back then either.

Question: Am I suppose to have just one sentence or a paragraph?

the founding fathers did not think women were asmportant as mern were and men could do more and better things then women

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.