I believe the answer is C, hope this helped
In China, a single party, the Communist party, controls the government. This means that other political parties are not allowed, and most people do not have an opportunity to participate in government. People who speak out against the government are jailed without trial, and prisoners have no rights to an attorney, a fair hearing, or an appeal. There is no freedom of the press, and the Internet is censored.
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The theme is power corruption
This is because he was trying to conquer Europe over all, so he could make the "perfect" country, and have everything the way he wanted it, and in complete control over the entire situation.