What happened to the post-WWII characteristics of music in the 1970s?

The daguerreotype was a photographic process developed by Louis J.M. Daguerre, which involved light-sensitive metal plates which could not be reproduced - each daguerreotype was unique.

a. true b. false

The second phase of the French Revolution can be described as

A. a time of absorbing the radical changes of the first phase. B. an era of good feeling among the revolutionaries. C. a period of extreme and violent changes. D. an age of restoration.