What leader, born in Pella in 356 BC, conquered the army of Darius III in 331 BC?
Battle of Gaugamela: The Battle of Gaugamela ( ; Greek: Γαυγάμηλα ), also called the Battle of Arbela (Greek: Ἄρβηλα ), was the decisive battle of Alexander the Great's invasion of the Persian Achaemenid Empire. Battle of Gaugamela:  In 331 BC Alexander's army of the Hellenic League met the Persian army of Darius III near Gaugamela, close to the modern city of Dohuk (Iraqi Kurdistan). Alexander the Great: Alexander III of Macedon (20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great (Greek: Ἀλέξανδρος ὁ Μέγας , "Aléxandros ho Mégas" ), was a king ("basileus") of the Ancient Greek kingdom of Macedon and a member of the Argead dynasty.
i don't know