The fifth longest river in Africa, the Rhumel (or Ampsaga) River, runs through which country?

Question

The Za Qu River, later the Lancang, and eventually the Mekong flows through or beside six countries before it flows into the sea from Vietnam; where does it rise?

Answer 1

Algeria
The Oued Rhumel meanders for 2,800 km (1,740 mi) through Algeria, from the Ferdjioua (Mila) mountains over the Constantine Plateau and through the Numidian mountains to the Mediterranean Sea.