Earth-2 (Post-Crisis)

Earth-2 is one of the many universes in the New Multiverse.

Creation
During the Crisis, Oliver Queen and the Paragons recreated the destroyed multiverse. Among those universes in the recreated multiverse is Earth-2.

Golden Age
Earth-2 had a period called the Golden Age of heroes when the heroes of the original Justice Society of America protected it and fought against their adversaries in the Injustice Society of America.

The Golden Age came to an end when the ISA fought the JSA and killed most of its members.

Modern Age
In the present, the JSA has reformed under the leadership of Stargirl.

Residents
See here.