This river was the site of intense conflict between the two countries that share most of it, and it is also known as the Arvand Rud.
Beginning at al-Qurnah, the area surrounding this river once had the largest date palm forest in the world. The lower course of thisriver is bordered by Abadan island on its north and the al-Faw peninsula on the south. Its third largest tributary, the Karun River, joins its downstream of Basra. This river was the site of intense conflict between the two countries that share most of it, and it is also known as the Arvand Rud. For 10 points, name this river that receives the waters of the Tigris and Euphrates, and whose name literally means "River of the Arabs".
Beginning at al-Qurnah, the area surrounding this river once had the largest date palm forest in the world.
Shatt al-Arab [accept Arvand Rud before mentioned]