By the 1970s, the Nipmuc had made many strides. Many local members of the tribe were called upon to help with the development of the Native American exhibit at Old Sturbridge Village, a 19th-century living museum built in the heart of former Nipmuc territory. State recognition was also achieved by the end of the same decade, re-establishing the Nipmuc people's relationship with the state and providing limited social services. The Nipmuc sought federal recognition in the 1980s. Tension between the Nipmuc Nation, which included the Hassanamisco and many descendants of the Chaubunagungamaug, based in Sutton, Massachusetts, and the rest of the Chaubunagungamaug, based in Webster, Massachusetts split the tribe in the mid-1990s. Divisions were caused by the frustrations with the slow pace of recognition as well as disagreements about gambling.