The main job is to help the president. Each of them know something different so that means that they help and give the president advice and information.
I am fairly sure it is D. I remember learning the chant "The US wanted to demilitarize and democratize Japan".
The Arno River (C) is an important river located in the Tuscan Region of Italy and was an important geographic feature which helped Florence to become a trade center.
Free mason basically believing in a type of Christianity.
