New Netherland (Nieuw Nederland; Novum Belgium or Neerlandia) was a 17th-century colonial province of the Dutch Republic located on the east coast of what is now the United States. The claimed territories extended from the Delmarva Peninsula to southwestern Cape Cod, while limited settlements were in parts of the U.S. states of New York, New Jersey, Delaware, and Connecticut, with small outposts in Pennsylvania and Rhode Island. The colony was originally conceived by the Dutch West India Company (GWC) in 1621 to capitalize on the North American fur trade. Settlement initially stalled because of policy mismanagement by the GWC, and conflicts with Native Americans. The settlement of New Sweden by the Swedish South Company encroached on its southern flank, while its eastern border was redrawn to accommodate an expanding New England Confederation. The colony experienced dramatic growth during the 1650s, and became a major port for trade in the north Atlantic Ocean. The Dutch surrendered Fort Amsterdam on Manhattan island to England in 1664 (formalized in 1667), during the Second Anglo-Dutch War. In 1673, the Dutch retook the area but relinquished it under the Treaty of Westminster (1674) that ended the Third Anglo-Dutch War the next year. The inhabitants of New Netherland (New Netherlanders) were European colonists, Native Americans, and Africans imported as slave laborers. Not including Native Americans, the colonial population, many of whom were not of Dutch descent, was 1,500 to 2,000 in 1650, and 8,000 to 9,000 at the time of transfer to England in 1674. During the 17th century, Europe was undergoing expansive social, cultural, and economic growth, known as the Dutch Golden Age in the Netherlands. Nations vied for domination of lucrative trade routes around the globe, particularly those to Asia. Simultaneously, philosophical and theological conflicts were manifested in military battles throughout the European continent. The Dutch Republic had become a home to many intellectuals, international businessmen, and religious refugees.