Which two statements show the impact of the battle at fort sumter on april 12, 1861? it started the civil war between the union and the confederacy. it encouraged four southern states to secede from the union. it forced four northern states to join indian territory. it led to a battle between native americans and the confederacy. it forced the confederacy to surrender to union forces and ended the civil war.

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.