Great Northern War

The Great Northern War (307-310) was a major conflict in the north of Arassia between the countries of Cardolan, Setacolina, and Veerelande, without side assistance from Terra de Areia and the Republic of Novac.
The War ended in the 310 Treaty of Milford, setting the borders along several latitudinal vectors, resulting in the world's longest arbitrary border. Tensions remain over the situation and war nearly broke out again in 321KOR.