Breach Cataclysm Timeline

Early nomads discover the structure containing the infamous Gate of Monsters within the rural forests of the central isthmus of Oxum.
Though intrigued by the strange structure, the nomads simply wrote down what they had found before continuing on their journey towards the west.

With financial aid of Foxtonia, Kounélian researches organize a second expedition up to The Gate of Monsters to study its inner structure further.
Both parties remain in a semi-permanent research camp outside the main structure for four years, gathering up more information regarding the gate's origin.
Scientists deduct that all materials used in its construction are native to Oxum, yet the method the gate's creators used to construct it remains a mystery.
Foxtonians start to believe it was built by deities as only they must have the power to construct such an intricate device, Kounélians remain skeptical of this theory.

Foxtonian forces reach the area around The Gate of Monsters, now overrun by alien creatures and mutated flora. Forces are suffering high casualties as they face unknown opponents and extra-planar beings.
Local commander orders messengers to be sent to Kounélios to request scientific assistance in closing the gate.

Foxtonia and Kounélios issue a national state of emergency as forces continue to lose ground.
Civilians near the edges of both nations are advised to leave their homes as extra-planar fauna continues advancing further towards civilization.
Both nations are requesting foreign military aid from the Empire of the Golden Seas , Estelonia , the Dwarven Kingdoms, Félinéonne  and the Council of Dragokar.
All parties agree to send aid except the Council, as it is "not their issue".

The newly founded Breach Security Council have declared the central area of the isthmus as lost to the Gate-Beings  after several attempts to push back creatures have resulted in failure.
Focus now lies on securing the areas around the isthmus to prevent creatures reaching civilized areas. Engineers from the Dwarven Kingdoms have agreed on the development of a quick-to-build stone wall along the isthmus' perimeter, funded by members of the council.
  Further expeditions into the central areas report increasingly more alien landscapes forming around the gate and areas miles out, now mutating previously-known wildlife and flora native to the area.

After agreeing on the best method of construction a wall of great size in a small amount of time, the Dwarven Engineers begin construction of the Sentinel Wall, a 25-meter tall wall spanning the entire length of the isthmus, made up from modular sections created in the dwarven homeland.
Construction would take 10 years to complete thanks to aid from all members of the Breach Security Council and continued military pressure on the gate-beings.

The combined forces of the Breach Security Council with support of artillery and weapons teams from the Goblinoid Confederation and Dwarven Kingdoms manage to confront The Doomwyrm as it rested near its last massacre's location.
After continuous bombardment of cannon fire and ranged weaponry, the wyrm was successfully pushed back behind the Sentinel Wall and back into the central regions of the Realm of Monsters.
Council members soon gathered to discuss ways to prevent events like these from happening in the future.

After the leaders of Foxtonia kept blaming the different sections of the king's court for the disaster of the Breach, the kingdom split into four Courts now fighting over who should reign over the land of Foxtonia . The lords all split into their own little kingdoms united under one of these four courts, battling each other for dominion over the land, thus splitting the land into the divided Foxtonian Kingdoms .

The first sightings of Gate-Beings are being reported outside of the Realm of Monsters, prompting Council forces to be redirected away from the border to deal with the threat.
This event indicates the possibility of interplanar tears forming further away from the Gate than previously estimated.

The annihilation of the capitol of Kounélios due to a fight between the Jackalfolk god of the dead Nazuteph and the eldritch trickster Malac'Gol after being double crossed by the old one's follower, resulting in the loss of thousands of lives and complete destruction of the city.