Question: Ruan Zhenduo served in many cabinet-level positions in what puppet state in Northeast China and Inner Mongolia, which was governed under a form of constitutional monarchy?
Sentence (from "Criticism of monarchy"): The twentieth century, beginning with the 1917 February Revolution in Russia and accelerated by two world wars, saw many European countries replace their monarchies by republics, while others replaced their absolute monarchy with constitutional monarchy.
Relevant evidence: No