You may not know how the town of Springfield, home to the Simpsons, was founded. In the late 1790s Jebediah Springfield and his partner Shelbyville Manhattan led a group of pioneers across the country to start a new community. They finally stopped at a beautiful spot atop a hill looking down on a lush valley: Jebediah: People, our search is over! On this site we shall build a new town where we can worship freely, govern justly, and grow vast fields of hemp for making rope and blankets. Shelbyville: Yes, and marry our cousins.Jebediah: I was — what are...