In the 1980s, the state officially recognized several tribes in a process authorized under legislation. The tribes had struggled to be recognized, against issues of racial discrimination. Because of their long history of interaction with European Americans, only two tribes had retained control of reservation lands established during the colonial period. Their "landless" condition added to their difficulty in documenting historic continuity of their people, as outsiders assumed that without a reservation, the Indians had assimilated to the majority culture. Another three tribes were recognized by the state in 2010.