The treaty signed following World War II to organize peace was the Treaty of Versailles, which was finalized in 1919. While it primarily dealt with the conditions for peace after World War I, its consequences and clauses set the stage for future conflicts, including World War II. The treaty imposed heavy reparations on Germany and redrew the map of Europe. Its harsh terms and the resulting economic turmoil contributed to political instability, paving the way for the rise of Adolf Hitler and the emergence of aggressive nationalism, which would ultimately lead to the outbreak of World War II.