Here is the story of how each of the original American colonies was formed and what social, economic, and religious factors caused the English colonists to set out for North America in a quest for freedom. The founding of Jamestown, the beginnings of slavery in North America, the Salem witch trials, and a cast that includes Pochahontas, Roger Williams, Daniuel Boone, and Oliver Cromwell are all part of this dramatic adventure in A History of US.