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| river valley civilizations (civilizations developed near the Nile River, the Tigris and Euphrates Rivers (Mesopotamian), Yellow and Yangzte Rivers in modern-day China, and Indus River in South Asia. Fesenko) | |||
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| river valley civilizations (civilizations developed near the Nile River, the Tigris and Euphrates Rivers (Mesopotamian), Yellow and Yangzte Rivers in modern-day China, and Indus River in South Asia. Fesenko) | |||