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. :)
a lot of power
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The answer is C, and the reason why is because the climate changed and since they where not used to that, that affected them, also rainfall and flooding started to shrink and that also contributed to the downfall of the Old Kingdom.