The first was Earth C-

Nope, it wasn't.

Earth-S and its funny animal universe, Earth-C Plus were earlier.

And Prime Earth had some alterations like merging with New Earth because of the respective Supermen? Thanks anyways.

Yeah theres Pre Zero Hr and Post Zero Hr NE and N52 and Rebirth PE. They just changed around some stuff, but not fully reset

Yeah, would be better if they re-designated them at least. I was just wondering about that because I'm more with Marvel then DC and so I wasn't fully aware of that. Thanks

Not really needed. Look at how many small retcons Marvel goes thru

Yeah. Like that new war to keep the 15 years rule possible.

Btw u know those other realities that I listed r different realities w/ different names, right?

Earth-2 is a different reality from Earth-Two and Earth 2.

Earth-Two: the first Golden Age stories (Batman, Superman, JSA)

Earth-2: after Infinite Crisis (New Earth period) they discover that the original Earth-Two is somehow survived from Crisis on Infinite Earths, but it has some differences (the JSA is fused with the Infinity Inc.)

Earth 2: new52 reboot of Earth-Two with a team similar to the JSA, but overall it's totally different, and the characters have nothing to do with the original.

It's like:

Earth-Two

Earth-One

Crisis on Infinite Earths

New Earth

Various Crisis (Zero Hour, Infinite Crisis)

Flashpoint

Prime Earth:

• New52

• Convergence (another Crisis)

• Rebirth (you are here!)

Thanks to all of you.