Answer: Christopher Columbus introduced horses, sugar plants, and disease to the New World, while facilitating the introduction of New World commodities like sugar, tobacco, chocolate, and potatoes to the Old World. The process by which commodities, people, and diseases crossed the Atlantic is known as the Columbian Exchange.
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Aqueducts were used because sewers were to advaced and reservoirse and cisterns got too dirty
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He argued that Congress had the power to create a bank because the Constitution granted the federal government authority to do anything "necessary and proper" to carry out its constitutional functions
