and consequent devastation of India, due to the efforts of Vidyaranya (14th c.), who created legends to turn Shankara into a "divine folk-hero who spread his teaching through his digvijaya ("universal conquest") all over India like a victorious conqueror." Shankara's position was further established in the 19th an 20th-century, when neo-Vedantins and western Orientalists elevated Advaita Vedanta "as the connecting theological thread that united Hinduism into a single religious tradition." Advaita Vedanta has acquired a broad acceptance in Indian culture and beyond as the paradigmatic example of Hindu spirituality, Shankara became "an iconic representation of Hindu religion and culture," despite the fact that most Hindus do not adhere to Advaita Vedanta. Contact with Persia and Mesopotamia Hindu and also Buddhist religious and secular learning had first reached Persia in an organised manner in the 6th century, when the Sassanid Emperor Khosrow I (531–579) deputed Borzuya the physician as his envoy, to invite Indian and Chinese scholars to the Academy of Gondishapur. Burzoe had translated the Sanskrit Panchatantra. His Pahlavi version was translated into Arabic by Ibn al-Muqaffa' under the title of Kalila and Dimna or The Fables of Bidpai. Under the Abbasid caliphate, Baghdad had replaced Gundeshapur as the most important centre of learning in the then vast Islamic Empire, wherein the traditions, as well as scholars of the latter, flourished. Hindu scholars were invited to the conferences on sciences and mathematics held in Baghdad. Medieval and early modern periods (c. 1200–1850 CE) Muslim rule Though Islam came to the Indian subcontinent in the early 7th century with the advent of Arab traders, it started impacting Indian religions after the 10th century, and particularly after the 12th century with the establishment and then expansion of Islamic rule. Will Durant calls the Muslim conquest of India "probably the bloodiest story in history". During this period, Buddhism declined rapidly while Hinduism faced military-led and Sultanates-sponsored religious violence. There was a widespread practice of raids, seizure and enslavement of families of Hindus, who were then sold in Sultanate cities or exported to Central Asia. Some texts suggest a number of Hindus were forcibly converted to Islam. Starting with the 13th century, for a period of some 500 years, very few texts, from the numerous written by Muslim court historians, mention any "voluntary conversions of Hindus to Islam", suggesting the insignificance and perhaps rarity of such conversions. Typically enslaved Hindus converted to Islam to