Many Native American tribes were forced to sign treaties that ceded large amounts of their land to the United States government. These treaties were often unfair, and the Native Americans were often not adequately compensated for their land. In addition, many Native Americans were forced to move to new reservations, which were often located in remote and undesirable areas.
The war and the subsequent loss of land and resources had a devastating impact on Native American communities. Many Native Americans died from disease, starvation, and violence. The war also disrupted traditional ways of life, and many Native American cultures were nearly destroyed.
In the years after the Civil War, the US government continued to treat Native Americans harshly. The government established a policy of assimilation, which aimed to force Native Americans to abandon their traditional cultures and adopt the ways of white Americans. This policy was often implemented through the use of force and coercion, and it caused further damage to Native American communities.
The Civil War and its aftermath were a time of great suffering for Native Americans. The loss of land, the forced removals, the disruption of traditional cultures, and the harsh treatment by the US government all contributed to the decline of Native American populations and cultures.