China is a unified multi-ethnic country, and Tibet is an inalienable part of China since ancient times. Before Christ, the Tibetan ancestors had already has connection with Han people. Later, over a long period of time, the scattered tribes on Tibetan plateau gradually unified into the present Tibetan nationality.
According to the history records, the original Tibetan inhabitants began to live in the highlands as early as the Palaeolithic Age. Then, they merged with the Qiang people, who had come the long way from Qinghai and Gansu Provinces, becoming the ancestors of Tibetans. They herded goats, cattle and sheep. By 100 BC people in Tibet learned to irrigate the land and grew rice and barley as well as raising herds of livestock. Although the history of Tibet can be dated back to thousands of years, the written history only recorded this mysterious land since 7th century when Songtsan Gampo, the 33rd Tibetan king, sent his minister Sambhota to India to study Sanskrit who on his return invented the present Tibetan script based on Sanskrit. In this page, you will find the brief introduction of Tibet history for your reference.