Historic 'Dixie' map dividing US into North and South up for auction

• A map known as the 'Dixie' map, which divided the US into North and South, is being auctioned.
• The map, considered one of the most consequential in American history, is expected to sell for up to $1.2 million.
• The Library of Congress previously declined to accept the map.
• The auction is expected to draw significant interest from collectors and historians.
• The map's historical significance lies in its representation of a pivotal period in US history.