Judging from your other questions, I would guess the Aztecs, because they had an extremely advanced civilization relative to their time period. However, you might want a second opinion to verify this. Hope this helps.
Answer:
I believe the answer is citicitizens
Explanation:
The answer is checks and balances because each branch has the power to "check and balance" the others.
Answer:
allies and friends of the west
Explanation:
I've tried my best