It would be "d. eight-hour days" that was not a problem faced by workers in nineteenth century mills or mines, since legislation advocating for strict working hours did not come about until the Progressive Era.
The election was held on Tuesday, November 6, 1860. ... The election of Lincoln served as the primary catalyst of the American Civil War. The United States had become increasingly divided during the 1850s over sectional disagreements, especially regarding the extension of slavery into the territories.
2nd is first, 3rd is second, and the first is last (I’m highly sure this is correct
