The land was ostensibly purchased from the Native Lenape people, who had lived near the fishing rich waters of Jamaica Bay for a thousand years. However, it is unlikely that the Lenape leaders, who did not practice the concept of land ownership, understood the agreement to which they were being conjoined. Rather, they more probably believed they were negotiating a treaty regarding the usage of the land. Wealthy Dutch land owners disagreed and within two generations, the once-powerful Canarsee tribe of the Lenape was brought to near extinction by bloody conflict with Europeans and other tribes, as well as the ravages of disease.