Herodotus Histories 7.156

[1]
  When he had made +Syracuse [15.3,37.0667] (Perseus) Syracuse his own, he took less account of his rule over +Gela [14.25,37.0667] (Perseus) Gela, which he gave in charge to his brother Hiero; over +Syracuse [15.3,37.0667] (Perseus) Syracuse he reigned, and all his care was for +Syracuse [15.3,37.0667] (Perseus) Syracuse.

[2] Straightway that city grew and became great, for not only did Gelon bring all the people of Camarina to +Syracuse [15.3,37.0667] (Perseus) Syracuse and give them its citizenship, razing the township of Camarina, but he did the same thing to more than half of the townsmen of +Gela [14.25,37.0667] (Perseus) Gela, and when the Megarians ¹ in Sicily [14,37.5] (region), Italy, Europe Sicily surrendered to him on terms after a siege, he took the wealthier of them, who had made war on him and expected to be put to death for this, and brought them to +Syracuse [15.3,37.0667] (Perseus) Syracuse to be citizens there. As for the common people of +Megara [23.35,38] (Perseus) Megara, who had had no hand in the making of that war and expected that no harm would be done them, these too he brought to +Syracuse [15.3,37.0667] (Perseus) Syracuse and sold them for slaves to be taken out of Sicily [14,37.5] (region), Italy, Europe Sicily.

[3] He dealt in a similar way with the Euboeans ² of Sicily [14,37.5] (region), Italy, Europe Sicily, making the same distinction. The reason for his treating the people of both places in this way was that he held the common people to be exceedingly disagreeable to live with.