USSR swallows up Eastern Europe after WW2

[Filuwaúrdjan]

It was done, in part, for security purposes. And in practice, how much of a difference was there, hmm...

[Filuwaúrdjan]

What made them "swallow" the ones they did swallow though?  Were the swallowed ones already more "Russian" at the time?  What is the big difference between say, the Ukraine and Poland?  Latvia and Romania?  Georgia and Hungary?

Georgia was added to the Soviet Union in, what, 1919 or 1920 after they ousted the Menshevik government there so is different to the others. And, well, they did "swallow up" a large part of Poland...