How he take ?
Will be peacfully or with military used ?
Does locals prefer to be under usa control more ?
I think, in greenland trump will put troops there? or he have other mission to taking over greenland.
I think it won't be at all. Pulling out an invasion of Greenland would probably make the US worse than it was. Trump is in the arm twisting business, but if you try twisting all the arms at the same time things may go wrong.
To put it plainly, if the US is bulliying Europe instead of supporting it, Europe would probaly move on to the next best - China, Ruzzia,... The US is a superpower, but cannot take the whole world on.