The only force that we can say shaped pre-colonial Africa is the military force. Have in mind that One purpose of centralized political systems was to create the foundation for large military forces that could be called upon for defense and territorial expansion and actualy a<span>uthoritarianism and the use of force were dominant features of European colonial administrations in Africa. </span>
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Mercantilism was based on the idea that a nation's wealth and power were best served by increasing exports and so involved increasing trade
The Battle of Marathon in 490 BC was part of the First Persian War. This was an attempt to punish Athens and Eretria.
Have you ever heard about Louis and Clark and Sacagawea? Anywho after the territory was bought from France Jefferson, the president at the time, sent a group of men to explore the territory. They were led by Louis and Clark, they met an Indian tribe and an Indian woman helped them on their journey.
The Preamble is he opening of the US Constitution. It explains why the framers of the constitution made our government a republic.