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The Attalid dynasty ruled the Hellenistic kingdom of Pergamum from approximately 283 to 133 BCE. Attalus I Soter, who reigned from 241 to 197 BCE, was the first ruler to adopt the title of king around 230 BCE after defeating the Galatians. His mother was a princess of the Seleucid house, a dynasty founded by a successor of Alexander the Great.12

The Attalids expanded their territory significantly, controlling much of Anatolia at various times. They were known for their patronage of the arts, building Pergamum into a beautiful and important city with a library rivaling Alexandria's. The dynasty ended when Attalus III bequeathed the kingdom to Rome in 133 BCE.34

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