Final answer:
After the battle at Gaugamela in 330 BCE, Darius III was captured and later killed by his own Persian nobles.
Step-by-step explanation:
After the battle at Gaugamela in 330 BCE, Darius III fled, only to be captured and eventually murdered by Persian nobles. Alexander the Great's military strategy and commanding of the Greek armies resulted in significant victories against the Persians. Darius III's attempt to regroup and continue leading his country failed when his own nobles turned against him, leading to his assassination.