The War of Broken Mountains

Military: War

Intent to control the Southern region, the Northern cities amassed their strength and launched a full-scale invasion, landing ships at the mouth of every river and sending thousands of troops inland.
  The Forests of Pando and the Surassan Jungle were set alight and the cities of Mandir and Surassa were finally breached.
  The reconstructed city of Erytheia was invaded once again, though its inhabitants had not forgotten their hard-learned lessons and offered much greater resistance than during the War of Bloody Shores.
  The invasion was strategically planned during the time of year when the Nomadic Tribes were scattered, so they could not pose a united front as they had once before, and the stronghold of Uklon was defaced.
  Only the city of Rambergam was unbreached, as well as a few remote nomadic settlements in the Mirewood Swamps.
  The people of the South would not be defeated, however, and while the Northerners had the advantage of technology, they had lost their connection to the natural world -- which the Southerners used against them to great effect.
  The land itself rose up against the invaders as druids from a myriad of circles, accompanied by rangers and tribespeople, clerics and paladins of the Timeless Ones, and all manner of Southerners summoned the powers of the land and slowly beat back the Northern aggressors.
  After the war, the Northerners accepted that they could not overpower the people of the South, but once again made one final, devastating blow.
  In a display of unparalleled magic that to this day remains unexplained, Northern spellcasters ripped the Ridgefell Mountains apart, and launched the shards into the sky -- thus, the city of Minster was founded.
  It was after this cataclysmic event, seen as the greatest blasphemy by those living in the South, that any remaining relations between the two regions were ended, and the separate nation-states of Chalcedon and Prehn were formed.