In 1600, the Delaware / Lenape Native American population in the surrounding area may have numbered as many as 20,000. Several wars, at least 14 separate epidemics (yellow fever, small pox, influenza, encephalitis lethargica, etc.) and disastrous over-harvesting of the animal populations reduced their population to around 4,000 by the year 1700. Since the Lenape people, like all Native Americans, had no immunity to European diseases, when the populations contacted the epidemics, they frequently proved fatal. Some Lenape starved to death as a result of animal over-harvesting, while others were forced to trade their land for goods such as clothing and food. They were eventually moved to reservations set up by the US Government. They were first moved to the only Indian Reservation in New Jersey, the Brotherton Reservation in Burlington County, New Jersey (1758-1802). Those who remained survived through attempting to adapt to the dominant culture, becoming farmers and tradesmen. As the Lenni Lenape population declined, and the European population increased, the history of the area was increasingly defined by the new European inhabitants and the Lenape Native American tribes played an increasingly secondary role.