What was a key feature of the Treaty of Versailles?

The Treaty of Versailles, signed at the end of World War I in 1919, is primarily recognized for placing full responsibility for the war on Germany. This principle is outlined in Article 231, often referred to as the "War Guilt Clause," which asserts that Germany and its allies were responsible for causing the war. This provision was significant because it set the stage for many of the treaty's other terms, including heavy reparations payments and territorial losses for Germany. By imposing this sole responsibility, the Treaty aimed to hold Germany accountable for the devastation of the war, fueling both political and economic consequences for the nation in the years to follow.

The other options reflect elements that were not part of the treaty or are historically inaccurate. The establishment of the United Nations is linked to the aftermath of World War II, not World War I, and occurred decades later in 1945. The Treaty did not mandate the complete disarmament of all nations; rather, it specifically focused on disarming Germany. Additionally, the treaty did not require all Allied nations to pay war reparations; Germany alone was held responsible for these payments.