Final answer:
The Han dynasty's major contributions include the establishment of the Silk Road, trading Chinese silk for horses and other goods, enhancing not just trade but global interactions.
Step-by-step explanation:
One of the most lasting contributions to China by the Han dynasty was the b. silk road. On it, the Chinese received a. horses and traded c. silk.
The Han dynasty was renowned for its development and consolidation of imperial institutions. Among its significant contributions was the establishment of the Silk Road, a network of trade routes that facilitated cultural and economic exchanges between the Han Empire and the West, including the exchange of horses for the luxurious Chinese silk. This trade route not only supported the domestic economy but also had a lasting impact on global trading patterns.