But another and far less kindly sort of slavery also arose in the old civilization, and that was gang slavery. If it did not figure very largely in the cities, it was very much in evidence elsewhere. The king was, to begin with, the chief _entrepreneur_. He made the canals and organized the irrigation (_e.g._ Hammurabi’s enterprises noted in the previous chapter). He exploited mines. He seems (at Cnossos, _e.g._) to have organized manufactures for export. The Pharaohs of the 1st Dynasty were already working the copper and turquoise mines in the peninsula of Sinai. For many such purposes gangs of captives were cheaper and far more controllable than levies of the king’s own people. From an early period, too, captives may have tugged the oars of the galleys, though Torr (_Ancient Ships_) notes that up to the age of Pericles (450 B.C.) the free Athenians were not above this task. And the monarch also found slaves convenient for his military expeditions. They were uprooted men; they did not fret to go home, because they had no homes to go to. The Pharaohs hunted slaves in Nubia, in order to have black troops for their Syrian expeditions. Closely allied to such slave troops were the mercenary barbaric troops the monarchs caught into their service, not by positive compulsion, but by the bribes of food and plunder and under the pressure of need. As the old civilization developed, these mercenary armies replaced the national levies of the old order more and more, and servile gang labour became a more and more important and significant factor in the economic system. From mines and canal and wall building, the servile gang spread into cultivation. Nobles and temples adopted the gang slave system for their works. Plantation gangs began to oust the patch cultivation of the labourer-serf in the case of some staple products.... § 3