The Earth Continent
Yun is covered in jungle. Those that have managed to avoid the fighting have carved out a place for themselves far behind the front lines in order to grow food. Yun is the most fertile continent in the world, producing well over 90% of all food.
Tribal. Each rival faction has their own leadership. Factions are divided largely on race, but there are rare exceptions. The factions disagree on nearly everything—land rights, using their dominance in food production to gain influence in the rest of the world, etc. And so, when they cannot compromise, they go to war.
Shifters, Goliaths, Half-Orcs.