Earth-Three was introduced by Gardner Fox and Mike Sekowsky in a 1964 issue of Justice League of America. Earth-Three's history is depicted as a mirror image to that of the Earth we know. On Earth-Three, Christopher Columbus was American and discovered Europe; England (a colony of America) won freedom in a reversed form of the Revolutionary War (with George Washington surrendering his sword to Charles Cornwallis) in 1774; President John Wilkes Booth was assassinated by actor Abraham Lincoln. Crucially, Earth-Three was home to an analogue to the Justice League, the Crime Syndicate of America.