Lewis and Clarke. Sacajawea was a translator for the people speaking with the tribes.
Because they were different from the other city-states, and they had a different government system.
Kept poor people from serving the state. Imitated the laws of its neighbors. Treated all its people fairly regardless of class.
Answer:
So we would have evidence. We don't want to make people think we copied our answers or looked them up. We want to set a good example. We want to show what we know.