Turning point in the war. Hint: Battle of Gettysburg. Summary.

The Battle of Gettysburg is called “High Water Mark of the Rebellion.” Also it was considered as a key turning point in the war because the Union victory placed the Confederacy on the defensive and ended Gen. Robert E. Lee's attempt to invade Union territory.

Explanation:

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.