Which of the following is listed as an aftereffect of the Khan's conquest?

• A. The fall of Rome
• B. The spread of the Black Plague
• C. An exchange of knowledge between Asia and Europe
• D. Stabilization of the Silk Road

Answer: (C)

Mongol expansion linked distant regions into a single, safer network that encouraged travel, trade, and the movement of people, ideas, and texts. This environment—often called the Pax Mongolica—made it easier for scholars, merchants, and travelers to cross Eurasia, which in turn facilitated the transfer of knowledge, techniques, and scientific works between Asia and Europe. Over time, this cross-cultural exchange helped bring mathematical, astronomical, medical, and philosophical ideas from the East into Western Europe, contributing to later intellectual developments.

While the other possibilities touch on real historical events associated with or around the period, they don’t capture the most characteristic and lasting effect emphasized in medieval studies. The fall of Rome predates these conquests; the spread of the Black Plague is a consequence of long-distance trade networks but is primarily known as a disease event rather than a knowledge transfer; and the Silk Road’s stabilization is a route-focused outcome, whereas the enduring impact highlighted in this context is the transmission of knowledge across continents.