Answer:
mass production
Explanation:
Factories began using mass production which promoted unskilled labor, not skilled labor.
Answer:
Examples of a secondary source are: Publications such as textbooks, magazine articles, book reviews, commentaries, encyclopedias, almanacs.
Answer:
Stalin
Explanation:
During the second half of the 1920s, Joseph Stalin set the stage for gaining absolute power by employing police repression against opposition elements within the Communist Party.