In the US government, citizens play a key role in elections
I'm sorry, did you answer your own question or do you still need clarification?
He claimed they were active in state departments (over 200)
The correct answer is the Mississippians. They were a Native American group that was commonly found in the Mississippi area between 800 AD and 1600 AD but some tribes were inspired culturally by them and kept their culture alive as far as the 18th century.
