<span>The Battle of Gettysburg, fought from July 1 to July 3, 1863, is considered the most important engagement of the American Civil War.
After a great victory over Union forces at Chancellorsville, General
Robert E. Lee marched his Army of Northern Virginia into Pennsylvania in
late June 1863.</span>
Answer:
They went west after learning that life in the west is better and was also the opportunity to buy land. Good luck and sorry if I'm wrong
The best and most possible would be slavery
This wall helped a little keep small invaders out because it provided a wall that was difficult to get over. But it wasn’t good enough to stop big invasions because a large amount of people would overwhelm the guards.