How did slave rebellions most directly affect political debates about slavery?

How did slave rebellions most directly affect political debates about slavery?
- They convinced most Southern leaders to support gradual emancipation.
- They led to fewer restrictions on enslaved people to reduce tensions.
- They increased Southern demands for stronger protections of slavery and harsher controls.
- They caused Congress to stop discussing slavery in public sessions.
Which cause-and-effect relationship is most accurate?
- Abolitionist petitions increased pressure on politicians to address slavery publicly.
- Abolitionist newspapers caused the immediate end of slavery in the North.
- Slave rebellions led Northern states to pass laws expanding slavery.
- Western expansion ended sectional disagreements by creating more free states.