Which states had the most land set aside for reservations in 1890?

In 1890, the states with the most land set aside for Native American reservations included South Dakota, Montana, and Arizona. South Dakota was particularly significant due to the large reservations established for tribes like the Lakota. Montana also had extensive reservations, such as those for the Crow and Flathead tribes, while Arizona contained reservations for several tribes, including the Navajo and Apache. These areas were established as part of federal policies aimed at managing Native American land and populations during that period.