The system of the Grand River Iroquois (two Iroquois reservations in Canada) integrated the traditional Iroquois property structure with the new way of life after being confined to a reservation. The reservation was established under two deeds by the Crown in the 18th century following the American Revolutionary War. These deeds gave corporate ownership of the lands to the Six Nations of the Iroquois. Individuals were granted leases for a specific plot by the Confederacy. The Iroquois idea that land came into one's possession if cared for and reverted to public control if left alone was used in reservation property law. In one property dispute case, the Iroquois Council sided with a claimant who had made improvements and cultivated the land over one who had left it alone.