Botswana is a country located in Africa.
During the 2012 apocalypse, Botswana was hit by massive earthquakes, and was swept by a megatsunami during the Worldwide Flooding. It remained flooded for 27 days until the global floodwaters began to recede and the entire African continent had risen, along with Botswana, becoming habitable. This made it, and Africa, not to suffer extreme damage.
This allowed the 2012 survivors (human and animal) on board the Arks to begin a new life and rebuild their species at the Cape of Good Hope.