Protests and uprisings in Tibet since 1950 The minor kingdoms and tribal states of the region were first united under Songtsen Gampo to form the Tibetan Empire in the seventh century CE Under the influence of his Chinese bride and first Nepali wife Bhrikuti, the Emperor converted to Buddhism and established it as the religion of Tibet. An influx of Chinese culture, the Indian alphabet, and Buddhist monks followed, combining with the native customs and animistic religion Bön to give birth to what has become today's ethnic Tibetan people and Tibetan Buddhism, also known as Lamaism, After the break-up of the Tibetan Empire in the mid-9th century,
Nirvana (Buddhism) the Nikayas preserve elements of an archaic form of Buddhism which is close to Brahmanical beliefs, and survived in the Mahayana tradition. Contrary to popular opinion, the Theravada and Mahayana traditions may be "divergent, but equally reliable records of a pre-canonical Buddhism which is now lost forever." The Mahayana tradition may have preserved a very old, "pre-Canonical" and oral Buddhist tradition, which was largely, but not completely, left out of the Theravada-canon. Schayer's view saw nirvana as an immortal, deathless sphere, a transmundane reality or state. Edward Conze had similar ideas about nirvana, citing sources which speak of an eternal