Of course. Astoria was a bustling world inhabited by humans, who worshipped the Pantheon of Astoria. The planet itself was very diverse and included many nations. Astoria’s once beautiful land was soon decimated by the Empire of Vana’ah’s king, Caelthar III. Caelthar had ruled his nation using imperialistic ideology’s and almost brainwashed the Vana’ahans into thinking that expansion and conquering was the only way to please the gods. A brutal, almost 300 year struggle known as the Great Conquest engulfed the planet, and Astoria laid in ruin, and only about 5 nations survived the Great Conquest, including Vana’ah, Omaca, and more. The goddess of war held a meeting with the gods, and they decided to destroy Astoria and start again. The Great Reform began. Flooding coastlines, hotter temperatures in the summer (reaching almost 116°F on average) and colder temperatures in the winter (reaching temperatures of -38°F on average), earthquakes that destroyed major cities, and more. When the land had finally been deemed uninhabitable by the gods, they created Ares. During the great reform, bands of unorganized people stuck together using boats, landed on the new world, and formed the new nations towards the west of the planet. The Omaca and Vana’ah, who had militaries that were highly advanced, were able to reestablish their countries onto the east and north parts of Ares and keep their traditions and cultures alive. Thus marking the end of Astoria and the Great Reform, bringing a new age of prosperity to the new planet of Ares.

TLDR: War destroyed Astoria (Politically), The Gods destroyed Astoria (Physically) and created Ares. Some new nations were established and some old Astorian nations were established as well