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 Swedish West India companies to promote the fur trade. The Lenape were major producers of wampum or shell beads, which they traditionally used for ritual purposes and as ornaments. After the Dutch arrival, they began to exchange wampum for beaver furs provided by Iroquoian-speaking Susquehannock and other Minquas. They exchanged these furs for Dutch and, from the late 1630s, also Swedish imports. Relations between some Lenape and Minqua polities briefly turned sore in the late 1620s and early 1630s, but were relatively peaceful most of the time. The Lenape practiced large-scale agriculture to augment a mobile hunter-gatherer society in the