That is the point of the meme. WW2 is the Lake Laogai of history. Don't get trapped there, go visit Kyoshi Island, the Air Temples . . . you know, the rest of history.
The allies were basically the good guys during the war, and the Axis were the bad guys. The Allies consisted of France, Great Britain, and the Russian Empire. And the Axis consisted of Germany, Italy, and Japan.
This meme is me complaining about too much WW2 on the History memes stream. It's like we're in the food court, and we can't move away from the churros stand (to use a different analogy).
I used a fantasy map because I didn't want the meme readers to get hung up on the real world map (also because Avatar is cool).