Hey! Sorry for the late response. I know it's fustrating.
Answer: According to ancient Greek philosophers, Tyrant shared power with <em>nobody. </em>I don't know is this is just in general, but Tyrant gained alot of power with the support of the people and therefore, held all of the power himself which later on, affected society.
Smallpox was had the most dramatic effect on Native Americans. It was quite sad, actually. They were given blankets and clothes that were already infected with smallpox.