Answer: cause many come from slaves
Explanation:
THe industrialization in Great Britain was a development of the first technologies that came out. The Steam Engine. Use of coal to make clothing out of cotton.
The industriliazation in China, has some of the most advanced technologies that are offered. These machines today are more effiecient.
That many Americans were desperately poor around the turn of the 20th century. The Social Gospel movement emerged among Protestant Christians to improve the economic, moral and social conditions of the urban working class.
Movies from the 1920s where silent films and 1930s films were called "talkies" because they had audio and more Dialogue. Also 1920s films were black and white.