Final answer:
The main goal of the newly formed Republican Party was 2. to abolish slavery.
Step-by-step explanation:
The main goal of the newly formed Republican Party was 2. to abolish slavery. They expanded on their platform of free labor and believed in basic human rights for all.
They aimed to stop the spread of slavery in the territories and promote the idea that all men, black or white, deserved the right to their own labor.