The New World
Lasting over 25 years, the battle was fought against the largest single group of organized undead ever recorded. It was lead by a master necromancer, and the war devastated most of the continent. It required every major kingdom banding together to stop the threat.
Elves suffered the heaviest casualties during the war. When the undead scourge began, it started in the heavily forested Elven territories. By the time the war was in full swing and all the races were aware, the Elven nations had been devastated. They lost over 75% of their population. This combined with their low birth rates have left the elves considerably weakened in the aftermath. One thing to come from that conflict is a closeness between the Elven and Tiefling races. The Tiefling communities that were used to living in isolated pockets, usually in the Elven territories, were the first to come to their aid. This has led to the two races becoming tightly dependent on reach other to rebuild.
Half-orcs and Dragonborn live in combined communities. Both of their monstrous appearances driving them away from “traditional” societies. As a result of their unique heritages, their communities became on the predominate military forces on the continent. Where the Dragonborn couldn’t negotiate trade, their Half-Orc brethren could force it. Just about every major culture traded with them out of necessity or fear.
Dwarves high in their mountain keeps were the furthest away from the war when it began. But once the effort was fully underway they worked closely with their gnomish counterparts to create weapons of war that could combat the undead in large numbers. They mastered methods for delivering catastrophic damage to an evil-aligned body while healing their own troops. Their creations were used to break the undead sieges which caused entire towns to starve while their undying pursuers prevented them from obtaining food or troops.
The human war effort was one of constant mistrust of the other races as well as the threat faced by the undead. Humans maintained one of the physically smaller kingdoms, despite their high number. The human cities were generally found in close proximity to both the forest home of the elves and the trading grounds of the Dragonborn/Half-Orc empires. This meant that humans struggled to find their own niche as they were limited in their ability to grow. Following the end of the war, humans traveling to the new world form the largest bulk of any group