Final answer:
The spread of religious, political, and economic ideas between Asia, Africa, and Europe through the Silk Road exemplifies cultural diffusion.
Step-by-step explanation:
The spread of religious, political, and economic ideas between Asia, Africa, and Europe through the Silk Road is an example of cultural diffusion. The Silk Road was a series of trade routes that facilitated the exchange of goods, ideas, and cultures between different regions. Traders traveling along the Silk Road brought back new religious beliefs, political systems, and economic practices to their home countries, resulting in the diffusion of these ideas throughout the connected regions.