When did the use of newsreels drop off considerably?

Which of the following could be described as a conservative reaction against the ideas of the jazz age

According to okun's law, if the unemployment rate goes from 2% to 5%, what will be the effect on the gdp?

The term 'white man's burden" refers to the difficulty of converting colonists to christianity. the belief that europe had a duty to civilize other people. the conviction that white people were superior to all others. the struggle to survive in an increasingly industrialized world.