context: In 499 B.C., Aristagoras Taejy Miletus began a military campaign to invade Naxos Island with Persian support. [1] But the campaign failed and before Aristagoras was sacked, he incited the Asia Minor region under Hellenistic rule to revolt against the Persians. This was the beginning of the Ionian Revolution that lasted until 493 BC and dragged several regions in Asia Minor into conflict. Aristagoras obtained military support from Athens and Eritrea, and in 498 BC, these Greek forces seized and burned the Persian capital of the Sard region. Dara I, the king of Persians at the time, pledged revenge against Athens and Eritrea. The revolution continued with heavy losses for both parties until 495 BC. In 494 BC, the Persians reorganized and attacked the center of the revolution in Miletus. The Ionians suffered critical losses in the battle of Leda and lost the rebellion.
question: When did the Ionian Revolution happen?
answers.text: 499 B.C.