Silk Road
The Mongols had a strong history of supporting merchants and trade. Genghis Khan had encouraged foreign merchants early in his career, even before uniting the Mongols. Merchants provided him with information about neighboring cultures, served as diplomats and official traders for the Mongols, and were essential for many needed goods, since the Mongols produced little of their own. Mongols sometimes provided capital for merchants and sent them far afield, in an ortoq (merchant partner) arrangement. As the empire grew, any merchants or ambassadors with proper documentation and authorization received protection and sanctuary as they traveled through Mongol realms. Well-traveled and relatively well-maintained roads linked lands from the Mediterranean basin to China, greatly increasing overland trade and resulting in some dramatic stories of those who travelled through what would come be known as the famed Silk Road.
Marco Polo is a famous western explorer who traveled east along the Silk Road, and the Chinese Mongol monk Rabban Bar Sauma made a comparably epic journey along the Road who ventured from his home of Khanbaliq (Beijing) to as far as Europe. And European missionaries, like William of Rubruck, also traveled to the Mongol court to convert believers to their cause, or went as papal envoys (sent on behalf of the pope) to correspond with Mongol rulers in an attempt to secure a Franco-Mongol alliance. It was rare, however, for anyone to journey the full length of Silk Road. Instead, merchants moved products like a bucket brigade, goods being traded from one middleman to another, moving from China all the way to the West; the goods moved over such long distances reached extravagant prices.
After Genghis Khan, the merchant partner business continued to flourish under his successors Ögedei and Güyük. Merchants brought clothing, food, information, and other provisions to the imperial palaces, and in return the Great Khans gave the merchants tax exemptions, and allowed them to use the official relay stations of the Mongol Empire. Merchants also served as tax farmers in China, Russia and Iran. If the merchants were attacked by bandits, losses were made up from the imperial treasury.
Policies changed under the Great Khan Möngke. Because of money laundering and overtaxing, he attempted to limit abuses and sent imperial investigators to supervise the ortoq businesses. He decreed all merchants must pay commercial and property taxes, and he paid off all drafts drawn by high-ranking Mongol elites from the merchants. This policy continued in the Yuan Dynasty.
The fall of the Mongol Empire in the 14th century led to the collapse of the political, cultural, and economic unity along the Silk Road. Turkic tribes seized the western end of the Silk Road trade routes from the decaying Byzantine Empire, and sowed the seeds of a Turkic culture that would later crystallize into the Ottoman Empire under the Sunni faith. In the East, the native Chinese overthrew the Yuan Dynasty in 1368, launching their own Ming Dynasty and pursuing a policy of economic isolationism.