Which BEST explains how Shi Huangdi tried to defend his empire from attacks by nomads?

a. He made a military service a requirement for citizenship
b. He built a stone wall over 2,600 miles long
c. He established military forts along the Silk Road
d. He encouraged the nomads to join Chinese society

1 answer

b. He built a stone wall over 2,600 miles long

Shi Huangdi, the first emperor of China, is best known for initiating the construction of the Great Wall of China, which was built to defend the empire from nomadic invasions.