In 138 BCE, Zhang Qian set out through the tall stone doors of Chang'an, the capital of Han tradition China. He rode at the leader of a procession of 100 Han officers, riding into the dusty, obscure grounds toward the west. Zhang Qian was an officer of the Han magnificent gatekeeper and he had volunteered for a basic mission. .
Right now, while the Roman Empire was simply starting to grow past Italy, the Han Empire controlled China. On their northwest fringe a solid migrant tribe, the Xiung-nu represented a steady danger. The Xiung-nu regularly attacked the wilderness, taking from the border towns every one of the things they couldn't get by trade. The Han sovereigns needed associates who might help them battle the Xiung-nu. The Han had known about a tribe further toward the west called the Yueh-chih ho may be benevolent. .
Despite the fact that initially populated by military strengths and overseers, these settlements soon pulled in Greed traders and brokers who connected the as of late vanquished terrains to the Mediterranean bowl. 1The Seleucid rulers attempted to advance exchange. They controlled area courses connecting Bactria, which offered access to Indian markets, to Mediterranean ports in Syria and Palestine. Groups exchanged with each other, some of the time over long separations.2 Before traditional times, long-remove exchange was a dangerous endeavor. Antiquated social orders regularly policed their own domains viably, however since they were generally little and smaller, broad districts lay outside their ability to control. 3Exchange going between social orders was in this way at risk to block attempt by pirates. .
Amid the traditional time, two advancements diminished the dangers connected with travel and fortified long-remove exchange. Rulers put intensely in the development of streets and extensions. They attempted costly tasks fundamentally for military and regulatory reasons, yet streets additionally had the impact of empowering exchange inside individual social orders and encouraging trades between various social orders.