The 1848 discovery of gold in California set off a frenzied Gold Rush to the state the next year as hopeful prospectors, called “forty-niners,” poured into the state. This massive migration to California transformed the state's landscape and population.
Europeans learned about new goods and ideas.
B.Roger Williams is the answer
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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