Black coup and transformation of Iran's society

3 Esfand 1299 coup (coup black) which was designed by Britain and applied by the associated factors to them, Caused by changes of Britain’s foreign policy in Iran after the First World War.The Britain which had to evacuate their forces from Iran and on the other hand required the presence of an assured military force in Iran, first adjusted a contract known as 1919, but thought of coup for realization of its goals, when was disappointed of its final approval. The study aims to answer this question by descriptive-analytical method and based on documents and new research what were the impacts of 1299 coup in transformation of Iran’s society especially the process of Iran’s dependence on the West colonialism? In this regard, black coup was an act which happened for the formation of an authoritarian state in the late Qajar. The other hand, the coup was not only a displacement in power, but was the beginning of extensive plans for identity changes in Iran which first were effected the political system and finally Iran’s society.