The '''[[Tigris]] and [[Euphrates]]''' are two rivers where civilization began in [[Mesopotamia]] before 3500 B.C., as described in the Book of [[Genesis]] and also confirmed by non-biblical sources.
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The '''[[Tigris]] and [[Euphrates]]''' are two rivers where civilization began in [[Mesopotamia]] before 2400 B.C. after the [[Great Flood]], as described in the Book of [[Genesis]] and also confirmed by non-biblical sources.