有什么特别的吗？我记得很早就有这个词了呀，跟西藏独立有什么关系吗？

我只是很想知道这个Tibet是怎么出来的？为什么不是"Xi Zang"?

这个词最早出现在1827年
你可以在oxford online的字典上找到来源。
我觉得可能是音译或者或者是特产.就象中国叫China, 不叫Zhong Guo一样。
附www.oed.com的解释。


Name of a country in central Asia; used attrib. of wool obtained thence, or of cloth or garments made from this or in imitation of it; applied (usually thibet) to????(a) a heavy stuff made wholly or partly of goats' hair;????(b) a fine stuff used for women's dresses. absol. Tibet cloth, or a gown or shawl made of it. Tibet dog, mastiff = Tibetan mastiff s.v. TIBETAN a. 2.

1827 SCOTT Surg. Dau. Concl., ‘How could you..collect all these hard words about India?’.. ‘Like the imitative operatives of Paisley, I have composed my shawl by incorporating into the woof a little Thibet wool, which..Colonel Mackerris..had the goodness to supply me with’. 1845 W. YOUATT Dog ii. 18 The colour of the Thibet dog is of a deep black slightly clouded on the sides... He has the broad short truncated muzzle of the mastiff. 1857 PARKHILL Hist. Paisley xiii. 97 Shawls of all kinds..such as thibet and cashmere shawls. Ibid. 98 Edinburgh had thibet in the manufacture. 1858 SIMMONDS Dict. Trade, Thibet-cloth, a camlet or fabric made of coarse goats'-hair. 1884 G. STABLES Our Friend the Dog xxv. 245 He was called a Thibet Mastiff. 1894 J. MACINTOSH Ayrshire Nights' Entertainm. vii. 129 A small production of thibets, coarse woollens, and muslins. 1900 M. E. WILKINS Parson Lord 196 Her black thibet gown. Ibid. 197, I don't care about this old thibet.

吐蕃？听着挺像