Договор об образовании СССР
The 1924 Constitution was the first constitution of the Soviet Union and ratified by the Second Congress of Soviets. The 1924 Constitution legitimized the December 1922 Treaty on the Creation of the USSR between the Russian Soviet Federative Socialist Republic, the Ukrainian Soviet Socialist Republic, the Byelorussian Soviet Socialist Republic, and the Transcaucasian Socialist Federative Soviet Republic founding the Soviet Union. In essence, the 1924 Constitution was an expansion and generalization of the 1922 Treaty, with most of the major parts already specified by the treaty, and also allowed for a potential expansion of the Soviet Union. Whereas the original Treaty had only 26 articles, the 1924 Constitution now had 72 divided into eleven chapters. The 1924 Constitution replaced the Russian Constitution of 1918 which served as a precursor and influenced the main principles of the Union-wide constitution.