sentences:  During the prosperous final decades of the 19th century, when the tribe had autonomy and minimal interference from the federal government, the Nation built schools, churches, and public houses.At the turn of the century, Congress passed the 1898 Curtis Act, which dismantled tribal governments in another federal government attempt to assimilate the Native American people.The related Dawes Allotment Act required the break-up of communal tribal landholdings to allot land to individual households.