conquered by the Dutch in 1655, while Sweden was engaged in the Second Northern War. Beginning in the 1650s, the English and Dutch engaged in a series of wars, and the English sought to conquer New Netherland. Richard Nicolls captured the lightly defended New Amsterdam in 1664, and his subordinates quickly captured the remainder of New Netherland. The 1667 Treaty of Breda ended the Second Anglo-Dutch War and confirmed English control of the region. The Dutch briefly regained control of parts of New Netherland in the Third Anglo-Dutch War, but surrendered claim to the territory in the 1674 Treaty of Westminster, ending the Dutch colonial presence in North America. After the Second Anglo-Dutch War, the British renamed the colony "York City" or "New York". Large numbers of Dutch remained in the colony, dominating the rural areas between New York City and Albany, while people from New England started moving in as well as immigrants from Germany. New York City attracted a large polyglot population, including a large black slave population. In 1674, the proprietary colonies of East Jersey and West Jersey were created from lands formerly part of New York. Pennsylvania was founded in 1681 as a proprietary colony of Quaker William Penn. The main population elements included the Quaker population based in Philadelphia, a Scotch-Irish population on the Western frontier and numerous German colonies in between. Philadelphia became the largest city in the colonies with its central location, excellent port, and a population of about 30,000. New England The Pilgrims were a small group of Puritan separatists who felt that they needed to distance themselves physically from the Church of England, which they perceived as corrupted. They initially moved to the Netherlands, but eventually sailed to America in 1620 on the Mayflower. Upon their arrival, they drew up the Mayflower Compact, by which they bound themselves together as a united community, thus establishing the small Plymouth Colony. William Bradford was their main leader. After its founding, other settlers traveled from England to join the colony. More Puritans immigrated in 1629 and established the Massachusetts Bay Colony with 400 settlers. They sought to reform the Church of England by creating a new, ideologically pure church in the New World. By 1640, 20,000 had arrived; many died soon after arrival, but the others found a healthy climate and an ample food supply. The Plymouth and Massachusetts Bay colonies together spawned other