Answer: B. the spread of slavery into the West.
Explanation:
It was an established fact in the years leading up to the Civil War that the South was pro-slavery and the North was Anti-slavery and so both sides had arguments about the spread of slavery into the western territories as those territories gained statehood.
The South wanted slavery to spread into the territories so that they would have more states which would give slavery more representation in Congress and therefore keep the practice going. The North wanted the territories to be free for the same reason.
The eighteenth amendment outlawing alcohol impacted the alcohol consumption of the general public. Decrease in alcohol consumption happened in low income families. However, illegal production and distribution of alcohol gave rise to organized crime and because of this consumption also began to rise.
The most identifiable person who benefited in this amendment by defying it was Al Capone. He earned millions from the sale of illegal booze and in turn ventured out to other illegal businesses like prostitution, drugs, and gambling.