The Battle of Antietam was the single bloodiest day of the American Civil War and is considered one of the major turning points of the war. ... The North was able to use the victory to raise morale, keep the South from gaining diplomatic recognition, and emancipate the slaves in the rebel states.
Conquistador in means to conquer
I believe it was a trade route that was used commercially. Traders often used this route because it stretched so long and wide across the US.
