The answer is C.
It wasn't just the Sauks however, it was them, the Meskwakis, and the Kickapoos, they crossed the Mississippi river into Illinois, in 1832.
Conquered territories were often left relatively unchanged under their old rulers as long as they recognized Aztec supremacy and paid tribute.
Hope this helps
"<span>a. James Madison used the idea of a three branch system described in Montesquieu's "The spirit of the laws" would be the best option, since it was Madison who advocated heavily for the separation of powers. </span>