What happened to the lost Kingdom of Kush?

Along the Nile River, in what is now northern Sudan, lay the ancient civilization of Kush. Though they were once conquered by a powerful neighbor, the kings and queens of Kush would go on to successfully challenge two of the most dominant empires in history: the Egyptians and the Romans. So what happened to this African kingdom? Geoff Emberling details the rise and fall of the Kush empire. [Directed by Carlos Rupit & Lizeth Rodríguez, narrated by Safia Elhillo, music by Salil Bhayani, cAMP Studio].