Answer:
The first two but honestly some Candidates are eager to get votes so they might to all of them just saying
Explanation:
Answer: The major difference between the North and the South -- and the one most responsible for the Civil War -- was the institution of slavery. In the North, slavery was almost universally prohibited by the 1800s, while the institution was a cornerstone of Southern society. In the North, many blacks were free, and in states such as Massachusetts, New York and Ohio, 100 percent of the black population was free. In the states of the Confederacy, by contrast, few blacks were free.
Explanation: pls give me brainliest thanks :D
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Light bulbs were the power source used in factories during the industrialization
