In 1620: The Mayflower lands at Plymouth [in now Massachusetts] with 102 people. The brutal winter kills half within five months. “Wild beasts and willd [sic] men” are all around them. This was the start of the settling — and then selling — of what became America. 100 years later, here's a drawing of Savannah, Georgia, showing the clean grid format the city still has today. The idea was to make it compelling for people to come and settle there.