Answer:
The following were used in the Mongol Empire but not in Western Europe during Polo's expedition:
1. Paper money: The Mongols introduced paper money, known as "chu," which was not used in Western Europe during the time of Polo's expedition.
2. Gunpowder weapons: The Mongols employed gunpowder weapons such as cannons and bombs, which were not commonly used in Western Europe during the 13th century.
3. Wooden printing blocks: The Mongols used wooden printing blocks to mass-produce books, a technology that was not yet developed in Western Europe during Polo's time.
These technologies were unique to the Mongol Empire and not found in Western Europe during the time of Marco Polo's expedition. The use of paper money, gunpowder weapons, and wooden printing blocks demonstrate the advanced technology and innovation of the Mongol Empire compared to Western Europe during this period.
Step-by-step explanation: