gain their freedom. There were occasional exceptions to religious violence against Hinduism. Akbar, for example, recognized Hinduism, banned enslavement of the families of Hindu war captives, protected Hindu temples, and abolished discriminatory Jizya (head taxes) against Hindus. However, many Muslim rulers of Delhi Sultanate and Mughal Empire, before and after Akbar, from the 12th to 18th centuries, destroyed Hindu temples and persecuted non-Muslims. As noted by Alain Daniélou: Bhakti Vedanta Teachers such as Ramanuja, Madhva, and Chaitanya aligned the Bhakti movement with the textual tradition of Vedanta, which until the 11th century was only a peripheral school of thought, while rejecting and opposing the abstract notions of Advaita. Instead, they promoted emotional, passionate devotion towards the more accessible Avatars, especially Krishna and Rama. Unifying Hinduism According to Nicholson, already between the 12th and the 16th century, "certain thinkers began to treat as a single whole the diverse philosophical teachings of the Upanishads, epics, Puranas, and the schools known retrospectively as the 'six systems' (saddarsana) of mainstream Hindu philosophy." Michaels notes that a historicization emerged which preceded later nationalism, articulating ideas which glorified Hinduism and the past. Several scholars suggest that the historical fame and cultural influence of Shankara and Advaita Vedanta was inetentionally established during this period. Vidyaranya (14th c.), also known as Madhava and a follower of Shankara, created legends to turn Shankara, whose elevated philosophy had no appeal to gain widespread popularity, into a "divine folk-hero who spread his teaching through his digvijaya ("universal conquest") all over India like a victorious conqueror." In his Savadarsanasamgraha ("Summary of all views") Vidyaranya presented Shankara's teachings as the summit of all darsanas, presenting the other darsanas as partial truths which converged in Shankara's teachings. Vidyaranya enjoyed royal support, and his sponsorship and methodical efforts helped establish Shankara as a rallying symbol of values, spread historical and cultural influence of Shankara's Vedānta philosophies, and establish monasteries (mathas) to expand the cultural influence of Shankara and Advaita Vedānta. Eastern Ganga and Surya States Eastern Ganga and Surya were Hindu polities, which ruled much of present-day Odisha (historically known as Kalinga) from the 11th century until the mid-16th century CE. During the 13th and 14th centuries, when large parts of India were under the rule of Muslim powers, an independent Kalinga became a stronghold of Hindu religion, philosophy, art, and architecture. The Eastern Ganga rulers were great patrons of religion and the arts, and