The Three
Pillars.

Tibet evolved an entirely unique civilization — the Uchen script, Tibetan Buddhism, administrative systems, and Himalayan architecture — developing independently of Sinitic culture over millennia.

For centuries, Tibet ruled its own territories under the Ganden Phodrang government and the Dalai Lamas — operating its own courts, army, postal service, currency (Srang), and independent tax system.

Tibet engaged in treaty-making with neighboring empires — the Sino-Tibetan Treaty of 821 AD, the Simla Accord of 1914, and the Nepal-Tibet Treaty of 1856. Such actions are exclusive to sovereign states.