Answer:
Step-by-step explanation:
compare: Both empires used marriages as means of confirming political alliances with foreign powers. ... The Roman Empire as established and ruled by generals, as were the Qin, Han, Sui, and Tang dynasties in China the empires were periodically threatened and usurped by rebel generals asserting their own authority.
contrast: The chinese empire was able to foster greater cultural homogeneity and more centralized political control than the roman empire which maintained separate cultural identities.