Having so done in Persia, he established twenty provinces, which the Persians themselves call satrapies . . . .
Translated by George C. Macaulay — our special project presenting the complete Herodotus with URLs for all of those people, places, events, and things which baffles and discourages modern readers.
Previously on Herodotus
86. Now at dawn of day the six came to the place as they had agreed, riding upon their horses; and as they rode through by the suburb of the city, when they came near the place where the mare had been tied up on the former night, the horse of Darius ran up to the place and neighed; and just when the horse had done this, there came lightning and thunder from a clear sky: and the happening of these things to Darius consummated his claim, for they seemed to have come to pass by some design, and the others leapt down from their horses and did obeisance to Darius.
87. Some say that the contrivance of Oibares was this, but others say as follows (for the story is told by the Persians in both ways), namely that he touched with his hands the parts of this mare and kept his hand hidden in his trousers; and when at sunrise they were about to let the horses go, this Oibares pulled out his hand and applied it to the nostrils of the horse of Darius; and the horse, perceiving the smell, snorted and neighed.
88. So Darius the son of Hystaspes had been declared king; and in Asia all except the Arabians were his subjects, having been subdued by Cyrus and again afterwards by Cambyses. The Arabians however were never obedient to the Persians under conditions of subjection, but had become guest-friends when they let Cambyses pass by to Egypt: for against the will of the Arabians the Persians would not be able to invade Egypt. Moreover Darius made the most noble marriages possible in the estimation of the Persians; for he married two daughters of Cyrus, Atossa and Artystone, of whom the one, Arossa, had before been the wife of Cambyses her brother and then afterwards of the Magian, while Artystone was a virgin; and besides them he married the daughter of Smerdis the son of Cyrus, whose name was Parmys; and he also took to wife the daughter of Otanes, her who had discovered the Magian; and all things became filled with his power. And first he caused to be a carving in stone, and set it up; and in it there was the figure of a man on horseback, and he wrote upon it writing to this effect: “Darius son of Hystaspes by the excellence of his horse,” mentioning the name of it, “and of his horse-keeper Oibares obtained the kingdom of the Persians.”
89. Having so done in Persia, he established twenty provinces,  which the Persians themselves call satrapies; and having established the provinces and set over them rulers, he appointed tribute to come to him from them according to races, joining also to the chief races those who dwelt on their borders, or passing beyond the immediate neighbors and assigning to various races those which lay more distant. He divided the provinces and the yearly payment of tribute as follows: and those of them who brought in silver were commanded to pay by the standard of the Babylonian talent, but those who brought in gold by the Euboïc talent; now the Babylonian talent is equal to eight-and-seventy Euboïc pounds. For in the reign of Cyrus, and again of Cambyses, nothing was fixed about tribute, but they used to bring gifts: and on account of this appointing of tribute and other things like this, the Persians say that Darius was a shopkeeper, Cambyses a master, and Cyrus a father; the one because he dealt with all his affairs like a shopkeeper, the second because he was harsh and had little regard for any one, and the other because he was gentle and contrived for them all things good.
90. From the Ionians and the Magnesians who dwell in Asia and the Aiolians, Carians, Lykians, Milyans and Pamphylians (for one single sum was appointed by him as tribute for all these) there came in four hundred talents of silver. This was appointed by him to be the first division. From the Mysians and Lydians and Lasonians and Cabalians and Hytennians there came in five hundred talents: this is the second division. From the Hellespontians who dwell on the right as one sails in and the Phrygians and the Thracians who dwell in Asia and the Paphlagonians and Mariandynoi and Syrians the tribute was three hundred and sixty talents: this is the third division. From the Kilikians, besides three hundred and sixty white horses, one for every day in the year, there came also five hundred talents of silver; of these one hundred and forty talents were spent upon the horsemen which served as a guard to the Kilikian land, and the remaining three hundred and sixty came in year by year to Darius: this is the fourth division. 
91. From that division which begins with the city of Posideion, founded by Amphilochos the son of Amphiaraos on the borders of the Kilikians and the Syrians, and extends as far as Egypt, not including the territory of the Arabians (for this was free from payment), the amount was three hundred and fifty talents; and in this division are the whole of Phenicia and Syria which is called Palestine and Cyprus: this is the fifth division. From Egypt and the Libyans bordering upon Egypt, and from Kyrene and Barca, for these were so ordered as to belong to the Egyptian division, there came in seven hundred talents, without reckoning the money produced by the lake of Moiris, that is to say from the fish; without reckoning this, I say, or the corn which was contributed in addition by measure, there came in seven hundred talents; for as regards the corn, they contribute by measure one hundred and twenty thousand bushels for the use of those Persians who are established in the “White Fortress” at Memphis, and for their foreign mercenaries: this is the sixth division. The Sattagydai and Gandarians and Dadicans and Aparytai, being joined together, brought in one hundred and seventy talents: this is the seventh division. From Susa and the rest of the land of the Kissians there came in three hundred: this is the eighth division.
– Herodotus, Book III
Note 1: Consult the map.
Herodotus made his living by being interesting. In a world where most people did not read and could not afford to buy a book even if they could, they would pay to listen to Herodotus recite from his books. They would not pay to be bored. In that world, the names that populate his stories would have some general familiarity to his audience. Their obscurity to us is a barrier that this series seeks to break down.
Because of lack of detail in maps as embedded images, we are providing links instead, enabling readers to view them full screen.