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In page Egyptians:

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Egypt fell under Greek control after Alexander the Great's conquest in 332 BC. The Late Period of ancient Egypt is taken to end with his death in 323 BC. The Ptolemaic dynasty ruled Egypt from 305 BC to 30 BC and introduced Hellenic culture to Egyptians. 4,000 Celtic mercenaries under Ptolemy II had even attempted an ambitious but doomed coup d'état around the year 270 BC.[citation needed]