The Incas, Mayans, and the Aztecs.
The answer is A hope this helps have a good day
The separation of powers guards against tyranny by making unilateral action by any branch more difficult through checks and balances.
On the other hand, the Americans had many intangible advantages. The British fought a war far from home. Military orders, troops, and supplies sometimes took months to reach their destinations.
The answer for you would be B, City dwellers could attend schools.