Answer:
Theodore Rosevelt
Explanation:
I did the edpuzzle and theodore rosevelt was the only major influencer around that time period.
It is a printing press that is being shown, a form of machinery invented by Johannes Gutenberg around 1440 which was based around already invented screw presses. Here, a company, perhaps book or newspaper related, is busy using the printing press to making multiple copies of the same text again and again.
I believe they were called unionists as they were part of the Union. The south was the Confederacy therefore southerners were Confederates.
