Eduard Meyer

“ The great provinces were divided into many smaller districts, the governors of which are also called satraps and hyparchs. The distribution of the great satrapies was changed occasionally, and often two of them were given to the same man. When the empire decayed, the satraps often enjoyed practical independence, especially as it became customary to appoint them also as generals in chief of their army district, contrary to the original rule. Hence rebellions of satraps became frequent from the middle of the 5th century ”