Which of the following countries is a constitutional monarchy

A．To pacify the market.
B．To make a speech on American economy.
C．To intervene.
D．To cooperate with Russia to pursue sustainable development.

A．The approach of psychohistorians to historical study is currently in vogue even though it lacks the rigor and verifiability of traditional historical method.
B．Traditional historians can benefit from studying the techniques and findings of psychoistorians.
C．Areas of sociological study such as childhood and work are of little interest to traditional historians.
D．The psychological assessment of an individual’s behavior and attitudes is more informative than the details of his or her daily life.