In ancient times, trade between the Indian subcontinent and Greece flourished with silk, spices and gold being traded. The Greeks invaded South Asia several times, starting with the conquest of Alexander the Great and later with the Indo-Greek Kingdom. Legend of the God Bacchus in Ancient India A legendary account states that when the Greek God Bacchus/Dionysus grew up, he discovered the culture of the vine and the mode of extracting its precious juice, being the first to do so; but Hera struck him with madness, and drove him forth a wanderer through various parts of the earth. In Phrygia the goddess Cybele, better known to the Greeks as Rhea, cured him and taught him her religious rites, and he set out on a progress through Asia teaching the people the cultivation of the vine. The most famous part of his wanderings is his expedition to the Indian subcontinent, which is said to have lasted several years. According to a legend, when Alexander the Great reached a city called Nysa near the Indus river, the locals said that their city was founded by Dionysus in the distant past and their city was dedicated to the god Dionysus. These travels took something of the form of military conquests; according to Diodorus Siculus he conquered the whole world except for Britain and Ethiopia. Returning in triumph (he was considered the founder of the triumphal procession) he undertook to introduce his worship into Greece, but was opposed by some princes who dreaded its introduction on account of the disorders and madness it brought with it (e.g. Pentheus or Lycurgus). Conquests of Alexander the Great (327–326 BC) In 327 BC Alexander the Great began his foray into Punjab. King Ambhi, ruler of Taxila, surrendered the city to Alexander. Many people had fled to a high fortress/rock called Aornos. Alexander took Aornos by storm after a successful siege. Alexander fought an epic battle against the ancient Indian monarch Porus in the Battle of Hydaspes (326). East of Porus' kingdom, near the Ganges River, was the powerful kingdom of Magadha, under the Nanda Dynasty. According to Plutarch, at the time of Alexander's Battle of the Hydaspes River, Magadha's army further east numbered 200,000 infantry, 80,000 cavalry, 8,000 chariots, and 6,000 war elephants, which was discouraging for Alexander's men and stayed their further progress into the Indian subcontinent: As for the Macedonians, however, their struggle with Porus