Who was the 6th century bce ruler that extended his empire from indus river to aegean sea and armenia first cataract of nile?

The ruler who extended his empire from the Indus River to the Aegean Sea and Armenia, reaching as far as the First Cataract of the Nile, was Darius I, also known as Darius the Great. He ruled the Persian Empire from 522 to 486 bce.