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Political centralization and organization
Agriculture
Domestication of animals
Trade
Writing system
Road system
Calendar
Armed military force
Religion
Architecture

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Wiki User

11y ago

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More answers

describe four river valley civilization in the world and why they developed near water

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13y ago
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they were all black

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14y ago
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nothing

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12y ago
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I NEED THR ANSER ASAPPPPP

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Anonymous

4y ago
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Q: What characteristics did all four river valley civilizations have in common?
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