Catalysts of Civil War: Kansas-Nebraska Act

In the decades leading up to the American Civil War, various social, economic, and political factors contributed to the growing tensions between the Northern and Southern states. One key point of contention was the debate over slavery and its expansion into the newly acquired territories in the West. Understanding these underlying causes is essential to grasping the complexities of this tumultuous period.

Which of the following events is considered a significant catalyst for the increasing conflict leading to the Civil War?