what evidence of modern mass culture can you identify near the turn of the twentieth century? what evidence of mass culture can you identify today?

For the answer to the question above, then as well as now, the evidence has included new media technology, improvements in transportation, and mass entertainment such as motion pictures.
Mass culture is the set of ideas and values that develop from a common exposure to the same media, news sources, music, and art. Mass culture is broadcast or otherwise distributed to individuals instead of arising from their day-to-day interactions with each other. One example of this is the challenges that some people do like mannequin challenge, Korean Fashion, being addicted to Netflix or the style of Taylor Swift and many more like Pop culture.

from the conditions of the working class in england by friedrich engels,the main idea is :

manchester's leaders hoped to oppress its working class to benefit factory owners.