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. | 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. |