18-21 In 221 BC, Shi Huangdi became China's first emperor by uniting China
under the Qin Empire. He ruled under a governing system called_(18), which
gave him absolute power. To control his empire efficiently, Shi Huangdi
created a _(19) to manage his provinces. He also began a policy of __(20), in
which money, writing, and education helped unify the empire. Shi Huangdi
also unified the empire by connecting existing walls along its borders for
(21) from enemies.
You will choose from these words: standardization, protection, bureaucracy, Legalism