 Early in his reign, Darius wanted to reorganize the structure of the empire and reform the system of taxation he inherited from Cyrus and Cambyses.To do this, Darius created twenty provinces called satrapies (or "archi") which were each assigned to a satrap ("archon") and specified fixed tributes that the satrapies were required to pay.A complete list is preserved in the catalogue of Herodotus, beginning with Ionia and listing the other satrapies from west to east excluding Persis which was the land of the Persians and the only province which was not a conquered land.