The Treaty of Versailles was one of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919, exactly five years after the assassination of Archduke Franz Ferdinand. Of the many provisions in the treaty, one of the most important and controversial required "Germany [to] accept the responsibility of Germany and her allies for causing all the loss and damage" during the war. The treaty forced Germany to disarm, make substantial territorial concessions, and pay reparations to certain countries that had formed the Entente powers. In 1921 the total cost of these reparations was assessed at 132 billion Marks (then $31.4 billion or £6.6 billion, roughly equivalent to US $442 billion or UK £284 billion in 2014)