sentences:  With the religious and political climate so unpromising, many Puritans decided to leave the country.Some of the migrants were also English expatriate communities (of non-conformists and Separatists) from the Dutch Republic who had fled to the European mainland since the 1590s.The Winthrop Fleet of 1630 included 11 ships led by the flagship "Arbella", and it delivered some 700 passengers to the Massachusetts Bay Colony.