According to Tibetan annals, the first king of Tibet ruled from 127 BC, but it was only in the seventh century AD that Tibet emerged as a unified state and a mighty empire under Emperor Gampo. Songtsen Gampo (born ca. 604, died 650) is the great emperor who expanded Tibet's power. | According to Tibetan annals, the first king of Tibet ruled from 127 BC, but it was only in the seventh century AD that Tibet emerged as a unified state and a mighty empire under Emperor Gampo. Songtsen Gampo (born ca. 604, died 650) is the great emperor who expanded Tibet's power. |