C
Test question analysis: According to the material information "The Declaration of War issued by the Emperor of Japan on September 2, 1937", it can be seen that the Japanese Emperor In the name of launching a full-scale war of aggression against China, the Emperor bears unshirkable responsibility for the war of aggression. A B is not the focus of the material, D is inconsistent with historical facts, and the so-called "quick establishment of peace in East Asia" is just an excuse to invade other countries.