I believe the answer is smallpox, but I could be mistaken. There were lots of viruses threatening the population at the time but from what I know, smallpox was the largest threat.
William Pitt the Younger was a Prime Minister from England. The Reign of Terror happened in France. They were not related to each other's country.
Good Day, The Answer To Your Question Is: New York City.
It was for women to have the right to vote