History Of Vale

Due to the natural barriers of shallow waters to the west and mountains to the east, Vale has managed to endure the onslaught of Grimm and become a beacon of safety in Remnant.
  Around eighty years ago, a massive ten-year conflict, simply known as the Great War, came to an end. In this conflict, Vale and Vacuo fought Mantle and Mistral. Throughout the century leading up to the Great War, Vale disliked the behavior of Mistral and Mantle. This behavior included the treatment of their citizens, their use of slavery, their abolishment of the arts and self-expression and their insistence that their way of life was best for everyone.
  Eventually, Vale and Mistral both set their sights on settling the small islands and peninsulas on the east coast of Sanus. The King of Vale, in an effort to avoid conflict, decided to share the land with Mistral's settlers, but his citizens disagreed with this choice. A riot broke out between two bands of settlers and devolved into the first battle of the Great War. Due to a prior alliance, Mantle quickly came to Mistral's aid, and for a while, Vale fought them alone, on both Sanus and Anima soil. Vale's enemies pushed for Vacuo to join the war on their side. However, fearing they would be conquered if Vale fell, Vacuo pushed all Mantle and Mistral presence out of their territory and allied themselves with Vale.
  During the war, Grimm attacks increased worldwide, and as a result, Vale lost many of its settlements to the creatures, some of which were never reclaimed.
  The Great War finally came to an end with the deadliest battle in the war's history, when Mistral and Mantle attempted to take Vacuo's Dust mines to cut off Vale and Vacuo's supply. In the ensuing battle, the King of Vale personally led his army alongside Vacuo's. It is said that he laid waste to countless men, thus earning him the nickname the Warrior King. Historians state this to be nothing more than grandiose hyperbole and suggest that this feat was aided by the unusually violent weather and Mantle's inexperience in desert combat.
  With the war over, the leaders of the four Kingdoms gathered on neutral ground on the island of Vytal to form a treaty and plan the future of Remnant. There, all four Kingdoms' governments were restructured, their territories were redistributed, the tradition of the Vytal Festival was begun, and the King of Vale founded the Huntsman Academies.
  Sometime before the events of the series, an attempt was made to expand the city of Vale to the southeast, creating a suburb known as Mountain Glenn. However, the attempt proved disastrously unsuccessful when repeated Grimm attacks destroyed the settlement and killed its residents. The failed expansion was sealed off from the rest of the Kingdom. The failure of Mountain Glenn is generally attributed to its lacking the natural defenses of Vale, but the involvement of Merlot Industries was also a factor. .