Can you please list the options on your question? If you do, I will be able to assist you! Thank you!
The Indus Valley civilians used granaries for c. storing food
Baron de Montesquieu believed in the separation of powers, which is included in the US Constitution. I hope this is what you are looking for.
Answer:
One of the main things that Africa had was a self-government and town meetings, where people would meet to make their society better. They also started the majority rules in politics. Americans borrowed these ideas and implemented them into our government. :)