“The creation and issuing of allotments began on the Pine Ridge Reservation in 1904, under Executive Order of July 29, 1904 and continued until 1923. During this period, government officials carved up the Reservation into parcels and issued them to Lakota families. The practice of communally managed lands by tribes was viewed as a non-productive and irrational use of resources.” (https://www.villageearth.org/projects-pineridge-reservation/lakota-lands-recover-project-develops-searchable-allotment-map-for-members-of-the-oglala-sioux-tribe/)