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In page Croesus:

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Reportedly, Croesus on the death of his father Alyattes faced a rival claimant to the throne in Pantaleon, son of Alyattes by a different mother. Croesus prevailed, and a number of the opposing faction were executed, and their property confiscated.[1] As soon as his reign was secure, Croesus continued his sires' wars against the Asian Greeks, bringing all the Aeolian and Ionian Settlements on the coasts of Asia-Minor under Lydian rule, from whom he exacted tribute;[2] However, he was willing to be friendly to European and Aegean Greeks, concluding various treaties with them, with Sparta, in particular, later in life.[3]