Answer: the Mayans
Explanation: I learned about this last year, and remember the teacher saying how alike they were and such.
Hope this helps :) I’m sorry if it’s incorrect
After the defeat of Gettysburg and Vicksburg which the Northern tactic that helped destroy morale in the south is Speech Abraham Lincoln, known as the Gettysburg Address. It made the people realize that it was not just a collection of individual states; it was one unified nation.
Is there some kind of passage I have to read to answer this?