Amusingly enough the feudial system still slightly exists in Africa. Who the west calls war lords aren't very different from Feudal Lords, Barons, and Vassals.

Actually, it pretty much exists in the U.S. too. The internal structures of most government agencies and large corporations are essentially feudal. The only difference is that the barons (a.k.a. middle-level management) fight over budget allocations rather than physical territory, and the battles are conducted with memos and powerpoint decks rather than swords. But other than that, it's pretty much the same thing.