Answer:
A) bleeding Kansas.
Step-by-step explanation:
The Kansas-Nebraksa Act created the territories of Kansas and Nebraska. The northerners and southerners knew that if these territories were to become states for their side that they would have a bigger political pull over the other. so both sides flooded the territories trying to get it to sixty thousand where it becomes allegeable for statehood. in the process there was immense fighting between the northerners and southerners which gave it nickname "Bleeding or Bloody Kansas)