Answer: State Governments
Explanation: All three divisions of power include the executive, legislative, as well as judicial branch. They are connected to each other. So, the state government option stands out.
The Civil War began when the Confederates bombarded Union Soldiers at Fort Summer. And, yes, it did start from the different views from the South and North that came with President Lincoln.
Answer:
Overall, the institution of slavery and the failure of the competing interests surrounding the institution in government led to the collapse in the balance between slave and free states and the Civil War.