Following the ratification of the United Earth Constitution the various states, provinces, etc of the Earth were mandated to redraw their borders to comply with the minimum population requirements necessary for statehood, effectively dissolving most of the Earth's historic regions and eliminating what remained of national boundaries. In North America this happened surprisingly quickly, as many former US States promptly established themselves as some of the first States within the United Earth. Many speculate this is largely due to the internal divisions within most North American regions.