The Euphrates is the langest an ane o the maist historically important rivers o Wastren Asie. Thegither wi the Tigris, it is ane o the twa definin rivers o Mesopotamie. Oreeginatin in eastren Turkey, the Euphrates flows through Sirie an Iraq tae join the Tigris in the Shatt al-Arab, which empties intae the Persie Gulf.