Geography was a huge part in slavery because in Africa the people were hungry so they would give/sell the weakest people in Africa to the colonies in order to survive. The south had the largest amount of slavery and north the lowest this caused arguments which later led to the civil war, this is how geography has shaped slavery
Trade with the Arabs did a few things for the African kingdoms. It increased trade, profit, and led to a ruling class.
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Prohibition. i think not sure
In the early 1600 Ming China was conquered by the Manchus. In 1644 they conquered the Chinese empire and established the Qing dynasty.