The information that Zhang Qian brought back encouraged Han Wudi to destroy the Xiongnu and lay the foundations for the

a. Pax Romana

b. Sui dynasty

c. Silk roads

d. Han dynasty

The information that Zhang Qian brought back encouraged Han Wudi to destroy the Xiongnu and lay the foundations for the " c. Silk roads," since it was now known that these would greatly expand the Chinese economy.