It is an old idea in political theory that one authority can and should sustain order at the global level. Pax Romana and Pax Britannica, for example, are known as eras of relative peace and order in world history that was provided by a single power- the hegemon. Having ruled the most of the middle east, Europe and near eastand Africa, Ottoman Empire can be considered to have been a world government. Therefore, the correct option is C.