The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty.

The Constitution of 1921 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.

A nation state, or nation-state, is a political entity in which the state and the nation are congruent. "Nation state" is a more precise concept than "country" or "state", since a country or a state does not need to have a predominant national or ethnic group.