Step-by-step explanation:
The statement that is NOT accurate about the Sioux's dominance in the northern Plains is:
"The Sioux pushed other smaller and less powerful tribes out of their homes on the northern Plains, dispersing them to the south and the west."
While the Sioux did engage in conflicts and territorial disputes with other tribes in the region, it would be inaccurate to say that they systematically pushed smaller and less powerful tribes out of their homes on the northern Plains, dispersing them to the south and the west. Native American tribes had complex and dynamic relationships with each other, including alliances, trade networks, and occasional conflicts. The movement and displacement of tribes were influenced by various factors, such as environmental changes, resource availability, and population dynamics. It is important to note that the history of Native American tribes and their interactions is nuanced and cannot be simplified to a single narrative of dominance and displacement.