This thing was responsible for the spread of the "Three Hares" symbol to gothic churches and for transferring the floral scroll pattern to the (*) Tarim basin.
A disease sometimes named for this thing is strongly associated with HLA-B51 and causes oral, genital, and ocular ulcers; that systemic vasculitis is also named for Behcet. Maes Titianus made a famous account of the Stone Tower while exploring this thing, and it was named by Ferdinand Richthofen. This thing was responsible for the spread of the "Three Hares" symbol to gothic churches and for transferring the floral scroll pattern to the (*) Tarim basin. Caravansarai were inns along it, and its southern branch is currently occupied by the Karakoram highway. It was originally mapped by Zhang Qian. For 10 points, name this route most famously traversed by Marco Polo, a trade route that connected the Far East with Europe named for a valuable cloth.
A disease sometimes named for this thing is strongly associated with HLA-B51 and causes oral, genital, and ocular ulcers; that systemic vasculitis is also named for Behcet.
Silk road [or Silk Routes; or Sichou zhi lu; or Seidenstrasse and Seidenstrassen]