What major territorial loss did Germany face as a result of the Treaty of Versailles?

The Treaty of Versailles, signed in 1919 after Germany's defeat in World War I, significantly impacted Germany's territorial integrity, and one of its most notable consequences was the loss of all overseas colonies. Germany's colonies, located in Africa and the Pacific, were stripped away and mandated to allies, primarily to Britain and France. This loss of colonies not only reduced Germany's economic resources but also affected its global status and presence.

While other territorial adjustments occurred — such as the loss of territory to neighboring countries, including Alsace-Lorraine to France and large areas to Poland — the complete loss of overseas colonies marked a profound shift in Germany's ability to compete on the imperial stage. The other options, although related to the treaty's impact, do not illustrate the specific consequence of losing all overseas territories, which was a significant blow to German nationalism and pride following the war.