 Croesus prevailed, and a number of the opposing faction were executed, and their property confiscated.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; However, he was willing to be friendly to European and Aegean Greeks, concluding various treaties with them, with Sparta, in particular, later in life.Croesus is credited with issuing the first true gold coins with a standardised purity for general circulation, the Croeseid (following on from his father Alyattes who invented minting with electrum coins).