Which European nations gained territory after the war?

After World War I, several European nations gained territory through various treaties. For instance, France regained Alsace-Lorraine from Germany, while Poland was re-established and gained land from Germany, Austria-Hungary, and Russia. Additionally, Italy acquired territories such as South Tyrol and parts of Istria, as outlined in the Treaty of Saint-Germain and the Treaty of Rapallo. These territorial changes significantly reshaped the map of Europe in the post-war period.