The correct statements are as followed:
1) It started the war between the Union and Confederacy- The Union's refusal to leave this fort (which technically was on Confederate territory) resulted in a brief conflict between the Union and Confederacy. Ultimately, the Union had to give up the fort and shortly after the war began.
2) It encouraged Southern states to secede from the Union- After the attack on Fort Sumter and the Confederate win, North Carolina, Tennessee, and Arkansas all left the Union and joined the Confederacy.