Answer:
C
Step-by-step explanation:
After the "Bloody Kansas" ("Bleeding Kansas") incident, the tensions over slavery became a poison in the political parties, At the 1860 election, this was particulary seen in the Democratic Party, and as such two branches were created: the Northern Democrats and the Southern Democrats. The Southern were inspired by the pro-slavery faction the "Fire Eaters". Thus, this split allowed the election of Lincoln.