What land did Denmark gain from Germany World War 1?

After World War I, Denmark gained the territories of North Schleswig from Germany following a plebiscite held in 1920. The region, also known as Sønderjylland, had been part of Germany since the Second Schleswig War in 1864. The plebiscite allowed residents to vote on whether to join Denmark or remain with Germany, resulting in the majority choosing to join Denmark. This territorial gain was part of the post-war adjustments outlined in the Treaty of Versailles.