The Battle of Gettysburg occurred as a result of General Robert E. Lee's push north into Pennsylvania in an attempt to move the bulk of the fighting in the east away from Virginia and into Union territory. His ultimate goal was Philadelphia, but General George Meade's forces caught up with him at Gettysburg. Both sides arrayed their forces around the small town, and the bloodiest battle of the war began.
It's A. You can tell by the blue color of the uniform.
Cotton farming and cattle
D) the great plains is the answer I believe to be correct. I feel the great plains needed this help.