Explain one way in which the understanding of the causes of disease and illness was different in c1750 from the present day

The correct answer to this open question is the following.

One way in which the understanding of the causes of disease and illness was different in 1750 from the present day is because at that time there was not the kind of scientific and medical knowledge that allows medical doctors to discover, prevent, or treat a disease.

Major discoveries such as the presence of germs and how this affected the human body, started to change the way doctors treated patients. Since those years, medical discoveries and technology in the creation of vaccines and medicines have allowed humans to live longer lives and with a better quality of life.

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.