In ancient times, regions of Asia had commercial relations among themselves as well as with parts of Europe and Africa. In the earliest days nomadic peoples traded over considerable distances, using barter as the medium of exchange. Particularly important in such trade were fine textiles, silk, gold and other metals, various precious and semiprecious stones, and spices and aromatic products. Trade between Europe and Asia expanded considerably during the Greek era (about the 4th century bce), by which time various land routes had been well established connecting Greece, via Anatolia (Asia Minor), with the northwestern part of the Indian subcontinent. ...(100 of 38030 words)