Final answer:
The Medicine Lodge Treaty of 1867 had a more negative impact on Native Americans due to violated promises of tribal ownership and protection. Tribes were forcibly removed from their lands and forced to depend on the government.
Step-by-step explanation:
The Medicine Lodge Treaty of 1867 had a more negative impact on Native Americans. While the treaty promised tribal ownership of the reservation lands and protection from encroachment, the government often ignored these promises. Land speculators and mining companies disregarded the treaty, leading to further loss of Native American lands. The treaty also resulted in the removal of tribes from their ancestral lands, disrupting their way of life and forcing them to depend on the government for support.