Final answer:
The Mongol territories promoted trade across Eurasia through security, infrastructure, relay stations, and standardization of weights and measures.
Step-by-step explanation:
The Mongol territories promoted trade across Eurasia in several ways. Firstly, they provided security and infrastructure to merchants, making trade more efficient. This included building bridges and safeguarding travel routes. Secondly, the Mongol territories developed a system of relay stations called "örtöö," where travelers could rest, change horses, engage in trade, and exchange information. Lastly, the Mongol territories standardized weights and measures, as well as introduced a department of monetary affairs that issued paper money, making trade across regions more efficient.