Answer: Mongols successfully spread their culture and religious beliefs along overland trade routes.
Explanation:
Under Genghis Khan and his descendants, the Mongols conquered a significant part of Asia and some of Europe to form the largest contiguous land empire in history. This meant that they took over a significant number of nations and trade routes.
These trade routes prospered under the Mongols as they gave trade and merchants special status. The security on these roads and the connections made to the various Mongol dominions enabled the Mongols to successfully spread their culture such that quite a number nations inherited their way of life.