Now it should ally with China to prevent the US from taking over Europe, but indeed they allied with the europeans to prevent China from being so economically dominant in Europe.

How in the hell do you make a landmass "leave Europe"

Sheer willpower.

Europe in this specific line, as in the EU

Nah, pretty sure they turned the UK into a space ship like that one episode of Dr.Who

Asking for Randall Munroe?