Answer:
However, if we had to point to a particular moment, we might point towards 1920, as this was the year in which more Americans were living in cities than in the countryside for the first time. One of the innovations that had the greatest influence on this shift was the introduction of the assembly line.
Explanation:
In general, this movement had a negative impact since lots of the expansion involved moving into territories that were controlled by European nations. Although most of the time physical conflict was avoided.
During the Civil War, African Americans in the North <u>B. </u><u>fought </u><u>in s</u><u>egregated regiments.</u>
During the Civil War:
- African Americans were not initially allowed to join the Union armies.
- African Americans eventually enrolled in the war but were in segregated units.
These segregated units were commanded by White officers as the Union did not want to commission any Black officers. These units fought bravely and earned much praise.
In conclusion, option B is correct.
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