[KC_Lion]

Honestly, it is along the same lines as creating a new geological epoch that centers around the creation of the Atomic Bomb.

https://en.wikipedia.org/wiki/Anthropocene

Basically make WWII a starting point with all history that precedes it being viewed "Times in a totally remote and different past".

[a fool in paradise]

I’m surprised that they don’t mark time by the birth of Karl Marx or the Russian Revolution.

WWII neither started nor ended anything as an epoch.

The “Cold War” followed on the heels of WWII as Soviet imperialist expansion began consuming countries in Europe and undermining governments on other continents.

Communism killed more people AFTER WWII so man had not gotten over genocide or despotism.