The document discusses the settlement of Plymouth Colony in 1620, noting that the Pilgrims who arrived on the Mayflower were religious Separatists who wanted to establish their own religious community free from the Church of England after facing persecution in England. It describes how they signed the Mayflower Compact while aboard the ship to set up a government and laws, and then struggled during their first year in Plymouth with many dying from disease and exposure during the long, cold winter before receiving help from Native Americans and celebrating the first Thanksgiving harvest feast.