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,
Buddhism is also Mahayana in origin, but is discussed below under the heading of Vajrayana (also commonly referred to as "Northern Buddhism"). There are a variety of strands in Eastern Buddhism, of which "the Pure Land school of Mahayana is the most widely practised today.". In most of this area however, they are fused into a single unified form of Buddhism. In Japan in particular, they form separate denominations with the five major ones being: Nichiren, peculiar to Japan; Pure Land; Shingon, a form of Vajrayana; Tendai, and Zen. In Korea, nearly all Buddhists belong to the Chogye school, which is