The Dawes Act of 1887 regulated land rights on tribal territories within the United States. Named after Senator Henry L. Dawes of Massachusetts, it authorized the President of the United States to subdivide Native American tribal communal landholdings into allotments for Native American heads of families and individuals. This would convert traditional systems of land tenure into a government-imposed system of private property by forcing Native Americans to "assume a capitalist and proprietary relationship with property" that did not previously exist in their cultures. Before private property could be dispensed, the government had to determine which Indians were eligible for allotments, which propelled an official search for a federal definition of "Indian-ness".