Answer:
We can see the use of euphemism in "From Emperor to Citizen", when the author uses the words "Puppet" and "Forbidden City".
Step-by-step explanation:
Euphenism is a figure of speech whose main objective is to soften a term that may sound unpleasant to read, or that may indicate a stronger and more impactful meaning. In "From Emperor to Citizen", we can see the use of euphenism in two situations. One is when the author uses the word "Puppet" to replace the use of "controlled". Thus, the author states that the governor was a puppet, instead of saying that the governor was controlled and manipulated.
Another example of euphenism can be seen when the author uses the words "forbidden city", this is because the city was only prohibited for foreigners, local citizens did not suffer prohibitions in relation to the city.