Answer:
Ancient Greece never really declined. But it did fall. The time period called Ancient Greece is considered by some historians to begin with the Greek Dark Ages around 1100 BC (the Dorians) and end when Rome conquered Greece in 146 BC.
From 1300 on disputes over succession weakened the central government in China, and there were frequent rebellions. The Yuan Dynasty fell in 1368, overthrown by the Chinese rebel leader Zhu Yuanzhang, who established the Ming Dynasty and became known as the Hongwu emperor
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