如何用英语介绍西藏的基本情况

China colonized Tibet hundred years ago, it has been part of China since long time ago. During 20th century Chinese communism party took power in China, Dalai Lama initially welcomed the new government. couple years later, the new government failed to satisfy Dalai Lama's demand for more autonomy, then he protested against Chinese rule. The government overrun his protest with killing hundreds and thousands Tibetan people. At the end, Dalai fled to East India where he organized his own government in exile.