What are the reasons for the development of feudalism in japan?

Why is it necessary to obey social norms? write briefly.

The 6th amendment's guarantee of a speedy and public trial is aimed at a. deterring potential criminals by fear of swift and certain punishment. b. trying those accused of crimes without undue delay and avoiding secret trials. c. eliminating overcrowded dockets in the nation's criminal courts. d. preventing jurors from being unduly influenced by public opinion.

What obstacles did jen bricker face early in life?