Achaemenid rule over Egypt came to an end through the conquests of Alexander the Great in 332 BC, after which it was ruled by the Hellenic Pharaohs of the Ptolemaic Dynasty. Their rule, and the independence of Egypt, came to an end when Egypt became a province of Rome in 30 BC. Augustus and subsequent Roman emperors were styled as Pharaoh when in Egypt until the reign of Maximinus Daza in 314 AD.