Final answer:
The Dawes Severalty Act of 1887 dissolved tribal land holdings, fragmented property, and reduced the land base of Native Americans. It also weakened traditional tribal culture by providing educational grants to Native American children.
Step-by-step explanation:
The Dawes Severalty Act of 1887 had a significant impact on the United States' Native American population. It dissolved tribal land holdings and gave smaller land parcels to individual Native Americans, which fragmented tribal property and reduced their land base. This resulted in the loss of community and traditional way of life. Additionally, the act aimed to assimilate Native Americans by providing educational grants for Native American children to attend primary and secondary schools. This weakened traditional tribal culture and practices as Native American children were encouraged to adopt American ways of life.