Classical Greek (sometimes referred to as Attic Greek), which was the dominant dialect of classical Greek) is the form of Greek used in the period commonly referred to as the classical period or the Golden Age of Greek culture. It is the form of Greek spoken before the Greeks are unified into the powerful Mediterranean empire under Philip of Macedonia and Alexander, his son. That empire survived for about three hundred years), and it took seriously a task of spreading Greek culture widely throughout the Mediterranean. The language used in this was Greek, but it was tailored (and simplified) for use by non-native speakers. This came to be called the koine and the period of its use was called the Hellenistic period. At times during the Hellenistic period, authors tried to mimic the more literary classical Greek.