During the 2012 Apocalypse, North America was hit by massive earthquakes. Later, volcanic eruptions engulfed the remains of North America. The Yellowstone Ash Cloud rendered much of North America uninhabitable after the Caldera erupted. North America was then swept by a mega-tsunami during the Worldwide Flooding.
As a result of the apocalypse, the entirety of North America is submerged underwater and is left with extreme damage from the earthquakes, volcanic eruptions and tsunamis, rendering it uninhabitable.