Every non-military metric (except for the Murican security umbrella). It helps when you let everyone starve so you can invest everything in artillery and ballistic missiles. Combine that with a catastrophic population decline, and there's no way of telling what will happen.
I don't expect it, but nothing is impossible. However, if current trends continue, and the South commits demographic suicide, then the North may prove to be the more successful state/civilization. Obviously, I don't like it, but that's what happens when you disappear.
Every non-military metric (except for the Murican security umbrella). It helps when you let everyone starve so you can invest everything in artillery and ballistic missiles. Combine that with a catastrophic population decline, and there's no way of telling what will happen.
I don't expect it, but nothing is impossible.