Answer:
I think this is mathematics not history...
Atoms are made of protons, neutrons, and electrons. But for this it would be protons. Hope this helps.
The correct answer is industrialization.
During the early 20th century, industrialization was growing rapidly in America. This meant more factories, consumer goods, and workers needed to produce goods.
Due to industrialization, many American citizens worked in factories for long hours and under unsafe working conditions. American citizens during this time work as many as 60 hours per week and worked 6 days a week. This result of industrialization caught the attention of the Progressive party members, as they wanted to make working conditions better for the average American citizen.
