The Battle of Gettysburg was pretty much when people realized the South was going to lose.
Slavery was found upon the Chesapeake Bay along with eastern
Virginia; plus the south Carolina and Georgia coasts; in a crescent of
lands in Georgia, Alabama and Mississippi; and most of all in the
Mississippi River Valley.
A period of roman peace and prosperity
Yes, because he showed great leadership. He helped the US out during the Great Depression. He was confident, and turned out to be a great, powerful, and respected president.