The correct answer is option 1: First World War. The Treaty of Versailles was a peace treaty signed at the end of the First World War in 1919. It was negotiated among the Allied powers, including the United States, the United Kingdom, France, and Italy, and it was imposed on Germany. The treaty aimed to establish peace and hold Germany responsible for the war, as well as to determine the terms of punishment and reparations that Germany had to pay. The treaty included provisions such as territorial adjustments, disarmament, war guilt clauses, and reparations payments. The Treaty of Versailles ultimately had significant consequences for Germany and was seen by many as a contributing factor to the rise of Adolf Hitler and the start of the Second World War. It is important to note that while the Treaty of Versailles marked the end of the First World War, it is not directly related to the other wars mentioned in the options (Second World War, Korean War, and West Asian War).