The correct reactions of the South to the election of Abraham Lincoln include:
- The South believed that the federal government was set against the South.
- The South believed that secession was unavoidable.
These points reflect the prevailing sentiment in the South following Lincoln's election, as many Southerners viewed his presidency as a threat to their way of life and the institution of slavery, leading to increased calls for secession. Points 2 and 3 do not accurately represent the overall reaction of the South during this period.