Answer: used large armies armed with crossbows, and drafted laborers for public works projects.
Step-by-step explanation:
The Han dynasty, founded in 202BCE lasted for about four centuries and is credited with several developments, one of which is the extension of the Great Wall of China. Ruled by emperors, who in turn dispensed administration through kings of territories and civil officers, they collected taxes and conscripted men for the army as well as the labor corps to consolidate their power.