Turkish Constitution of 1921

The Constitution of 1921 (Ottoman Turkish: Teşkilât-ı Esasiye Kanunu; Turkish: 1921 Türk Anayasası) was the fundamental law of Turkey for a brief period from 1921 to 1924. The first constitution of the modern Turkish state, it was ratified by the Grand National Assembly of Turkey in January 1921. It was a simple document consisting of only 23 short articles. In October 1923 the constitution was amended to declare Turkey to be a republic. In April the following year the constitution was replaced by an entirely new document, the Constitution of 1924.

It was prepared by the Grand National Assembly that was elected both as a Constitutional Convention and as an acting Parliament on April 23, 1920, following the de facto collapse of the Ottoman Empire in the aftermath of the First World War. Mustafa Kemal Atatürk, who would later become the first president of the Republic of Turkey in 1923, was the major driving force behind the preparation of a Constitution that derived its sovereignty from the nation and not from the Sultan, the absolute monarch of the Ottoman Empire. The National Assembly convened with the purpose of writing a would prepare the ground for the proclamation of a Republic and consecrate the principle of national sovereignty. This Constitution would also serve as the legal basis for the Turkish War of Independence during 1919-1923, since it would refute the principles of the Treaty of Sèvres of 1918 signed by the Ottoman Empire, by which a great majority of the Empire's territory would have to be ceded to the Entente powers that had won the First World War.

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