Question 1: They were Union generals who commanded the Army of the Potomac.
Question 2: an extensive railroad system for moving troops and supplies
Question 3: They were battles fought in Union territory.
Question 4: The Confederate attack on the Union fort initiated the war.
Question 5: several states seceded from the Union.
Question 6: Battle of Fort Sumter
Question 7: All of these
Question 8: Jefferson Davis
Question 9: The Union divided the Confederacy and took control of the Mississippi River.
Question 10: issue his preliminary Emancipation Proclamation.