Civil war

2. To formally withdraw from a political union.
6. Union's top general who accepted Lee's surrender.
8. The northern states that did not secede during the Civil War.
11. The courthouse village in Virginia where General Lee surrendered to General Grant.
13. A common nickname for Union soldiers or Northerners.
15. The act of freeing enslaved people, as detailed in an 1863 proclamation.
16. A person from the Confederacy or a state below the Mason-Dixon line.
17. Site of two major battles, known to the Union as Bull Run.
18. U.S. President who issued the Emancipation Proclamation.
19. A network of secret routes and safe houses used by enslaved people to escape to freedom.

1. Commander of the Confederate Army of Northern Virginia.
3. An official public announcement, such as Lincoln's Emancipation one.
4. The southern states that seceded and formed their own government.
5. The movement to end slavery.
7. The bloodiest single-day battle in American history.
9. Union's top general who accepted Lee's surrender.
10. The sole president of the Confederate States of America.
12. Enslaved man who sued for his freedom in a famous, pre-war Supreme Court case.
14. Site of a pivotal three-day battle in Pennsylvania, 1863.