Answer:
1. Civil War- a war between citizens of the same country.
2. Secede- withdraw formally from membership of a federal union or an alliance, or a political or religious organization.
3. Secession- the action of withdrawing from membership of a federal union or an alliance.
4. Rebellion- the act of violent or open resistance to an established government or ruler.
5. Border State- a state with slavery that chose to stay with the Union. They were between the northern free states and the Confederate States.
Step-by-step explanation: