Earth-10

Earth-10 is a reality in the multiverse, and one of several that's point of divergence was during World War II.

History
Earth-10's history was identical to that of Earth-95's and real life until World War II, when in 1943 the Empire of Japan turned on the Third Reich. They did this for two reasons: firstly because they perceived by then that the Axis Powers would never win the war, and second because they knew that even if they did, the Nazis would never end up actually sharing power with those they viewed as not of the Aryan race.

Japan's switching sides proved a devastating blow to the already pressured Third Reich, and the Nazis were swiftly defeated, World War II ending earlier in December of 1943 and the Holocaust also ending earlier as a result. For obvious reasons, Hiroshima and Nagasaki were not bombed on this Earth either.

Trivia

 * The Nazis losing more quickly on this Earth is somewhat ironic, as in DC's multiverse, Earth-10 (also known as "Earth-X") is in fact a reality where the Nazis won the second World War. No such reality exists in the Icons Multiverse however.