(3) The so-called "northern route" was rather a system of routes leading in general from the "back doors" of India and China to the Black Sea. Caravans from India and China met at Samarkand and Bokhara, two famous cities on the western slope of the Tian-Shan Mountains. West of Bokhara the route branched out. Some caravans went north of the Caspian, through Russia to Novgorod and the Baltic. Other caravans passed through Astrakhan, at the mouth of the Volga River, and terminated in ports on the Sea of Azov. Still others skirted the shore of the Caspian Sea, passing through Tabriz and Armenia to Trebizond on the Black Sea. The transportation of goods from the Black Sea and eastern Mediterranean was largely in the hands of the Italian cities,[Footnote: In general, the journey from the Far East to the ports on the Black Sea and the eastern Mediterranean was performed by Arabs, although some of the more enterprising Italians pushed on from the European settlements, or _fondachi_, in ports like Cairo and Trebizond, and established _fondachi_ in the inland cities of Asia Minor, Persia, and Russia.] especially Venice, Genoa, Pisa, and Florence, although Marseilles and Barcelona had a small share. From Italy trade-routes led through the passes of the Alps to all parts of Europe. German merchants from Nuremberg, Augsburg, Ulm, Regensburg, and Constance purchased Eastern commodities in the markets of Venice, and sent them back to the Germanies, to England, and to the Scandinavian countries. After the lapse of many months, and even years, since the time when spices had been packed first in the distant Moluccas, they would be exposed finally for sale at the European fairs or markets to which thousands of countryfolk resorted. There a nobleman's steward could lay in a year's supply of condiments, or a peddler could fill his pack with silks and ornaments to delight the eyes of the ladies in many a lonesome castle. [Sidenote: Difficulties of European Commerce]