Answer:
D. Life, liberty, and the pursuit of happiness is the correct answer.
Explanation:
I am going to presume after the ww2 bombs were dropped on Hiroshima and Nagasaki you mean. in that case the Japanese had to become allies and japan was changed to a democratic state under the power of their allies. popular culture dominated although traditional arts continued.
1) The word "vassal" was mostly used for the knights who were responsible for providing the military defense for the king - the answer is "perform military service"
2) Magna Carta is known as the first document to limit the power of the king ! (3rd option)
3) this was the Holy Roman Empire, which was actually an association of independent states.
The correct answer should be c. education
Education has always been a big thing even in the times of the colonies. The US had the first university much before many countries worldwide even had high-schools.