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,
Black-Dutch identifying as "Black Dutch" may have originated during and after the 1830s Indian Removal era. {citation needed} They may have attempted to "pass" and avoid being removed to Indian Territory or stigmatized by what became a majority Anglo-American society. Some Native Americans, mainly from the Five Civilized Tribes of the Southeast, claimed "Black Dutch" or "Black Irish" heritage in order to purchase land in areas which United States treaties and other laws had reserved for people of European descent. Once they owned the land, such families who had escaped forced removal would not admit to their Native American heritage, for