Alexander the Great in the Quran called them the Caspian Gates. Twenty and two Kings did I shut up therein. These pseudepigraphic letters from Alexander to his mother Olympias and his tutor Aristotle, describing his marvellous adventures at the end of the World, date back to the original Greek recension α written in the 4th century in Alexandria. The letters are "the literary expression of a living popular tradition" that had been evolving for at least three centuries before the Quran was written. Several historical figures, both Muslim and Christian, searched for Alexander's Gate and several different identifications were made with actual walls. During the Middle
Indian campaign of Alexander the Great June 323 BC. In 322 BC, one year after Alexander's death, Chandragupta Maurya of Magadha founded the Maurya Empire in India. After the death of Spitamenes and his marriage to Roxana (Raoxshna in Old Iranian) in 326BC to cement his relations with his new Central Asian satrapies, Alexander was finally free to turn his attention to India. For Alexander, the invasion of India was a natural consequence of his subjugation of the Achaemenid Empire, as the areas of the Indus valley had long been under Achaemenid control, since the Achaemenid conquest of the Indus Valley circa 515 BCE. Alexander was