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Your answer is 400 years!
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Answer:
The United States emerged as a world power as a result of victory over Spain in the Spanish American War. The United States emerged as a world power.
Explanation:
Answer:
The Sung dynasty became more democratic than it was before as the Emperor had to pay more attention to the middle class and their demands rather than that of the higher class.
Many intelligent scholars, brilliant merchants, great artists, etc. emerged from the middle class.
The middle class became more dominant in cultural and political affairs.
The distribution of wealth and prosperity witnessed a balance as it began penetrating down to even the lowest strata of society.
Explanation:
Answer: There was continued diffusion of crops and pathogens throughout the Eastern hemisphere along the trade routes.
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Explanation: