The Westerlands fell into near complete disarray after the last of the Lannisters of Casterly Rock died. The Lannisters of Lannisport saw themselves as the natural heirs to Casterly Rock and the Westerlands itself. Unfortunately, this was disputed by the far more powerful lords of realm. A civil war that lasted a generation ensued. The Lannisters of Lannisport fought for their own claim against a succesion of ambitious lords and pretenders, with Reynes and Lannisters being sprung up and cut down over and over. One man even claimed to be a member of House Casterly. He even got a small following before being killed by the Paynes at Silverhill in 395 AL. The war ended five years later at the actions of one man. Tytos Crakehall called for a parley between all of the lords so that he may lay down his arms and support their claimants. When they arrived at Crakehall, the doors were locked. Tytos gave a rousing speech calling for an end to the fighting. He told them to remember the lesson of Tywin Lannister, that a strong Westerlands must be united as one. He offered a solution to that would take Tywin's advice without suffering under another Tywin. In the eighth month of the year 402 AL, The Great Council of Crakehall was convened and its members signed the Consitution of Crakehall making the Westerlands a Parliamentary state. The country flourished for the next three centuries, with only a few minor civil conflicts. The Westerlands became the technological and financial center of Westeros, with the Bank of Lannisport replacing the Iron Bank as the major financial store for Westeros. It is still the largest and most important stock exchange on the continent. The Westerands were the first to acquire dragonpowder besides the Blackfyres and used it to defeat them at The Golden Tooth in 570 AL. They colonized the southern Iron Islands in 530 AL. They've had an alliance with The Reach since 640 AL.