Your universe is clearly different than mine. You say, "The only thing standing in the way of everyone on Earth having such peaceful freedom is that people in other usually larger land areas use their larger police/military to force the smaller areas to submit to becoming mere provinces of the larger land area’s government."

And yet you fail to grasp that the people expelled in 1948 often had deeds or keys to their homes, but Israel, with its larger military, refused to let them return to their ancestral homes.