Lenape French and Indian War (a part of the Seven Years' War in Europe). The Lenape's quick adoption of trade goods, and their need to trap furs to meet high European demand, resulted in their disastrous over-harvesting of the beaver population in the lower Hudson Valley. With the fur sources exhausted, the Dutch shifted their operations to present-day upstate New York. The Lenape who produced wampum in the vicinity of Manhattan Island temporarily forestalled the negative effects of the decline in trade. Lenape population fell sharply during this period, due to high fatalities from epidemics of infectious diseases carried by Europeans,
Lenape River basin. Smallpox devastated Native American communities even located far from European settlements by the 1640s. The Lenape and Susquehannocks fought a war in the middle of the 17th century that left the Delaware a tributary state even as the Susquehannocks had defeated the Province of Maryland between 1642-50s. New Amsterdam was founded in 1624 by the Dutch in what would later become New York City. Dutch settlers also founded a colony at present-day Lewes, Delaware on June 3, 1631 and named it "Zwaanendael" (Swan Valley). The colony had a short life, as in 1632 a local band of Lenape