By the simple fact of geography, the United States is the world's most isolated superpower. It is logistically impossible to invade for it is surrounded by oceans and there is nowhere to stage an opposing army. Yet the American people are not consciously aware of their isolated and protected status. They are easily frightened and heavily armed. They reach adulthood with almost no understanding of geopolitics and global economics, or of their unique and privileged place in these systems. These practical matters are not part of their public education.
The United States is not part of the rich and varied interconnected nations and land masses of the historic civilized world, which are concentrated entirely in the Eastern hemisphere. Americans can live a lifetime and never fully understand where they are in the world and what that truly means.