One of the effect of the interaction between China and Korea is Cultural Diffusion.
Currently, korean culture is a mixture of Japanese and Chinese cultures from their previous contact hundred years ago. You can see the similarties of culture and tradition between these three countries, whether from their traditional clothes, music instrument, writings, etc
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The Persian wars were fought against a foreign invader.
The Peloponnesian war was fought among Greeks.
Volume, Velocity, & Variety
Wave of invader swept across Western Europe (Vikings, Franks, Goths, and Huns) trade slowed down to a trickle (people became more isolated) towns became empty, and classic learning just stopped.
Answer: 1,2,4
to punish the South for the war
to help the formerly enslaved achieve freedom and equality
to impose requirements for Southern states to rejoin the Union
Explanation: