104 years ago today, on February 21, 1921 (January 14, 1921 in the lunar calendar), Reza Khan launched a military coup. Reza Khan was born in a declining family in Mazandran Province in northern Iran in 1878. He began his career as a professional soldier at the age of 14. On February 21, 1921, with the support of Britain, he launched a coup without bloodshed and became the commander of the Cossack Division and held real power. In the following two years, people's uprisings in the Gyran Soviet Republic, Khorasan Province and Azerbaijan Province were suppressed one after another. 1923--1925 Prime Minister in the year. At the end of 1925, the Kaiga Dynasty was overthrown, and a constitutional decree announced the establishment of the Pahlavi Dynasty. Reza Khan became the first king of the Pahlavi Dynasty. During his reign, he strengthened centralization, successively put down resistance in the Kurdish region, and divided separatist activities in the central Rulestan region and southwestern Khuzestan. Iran regained its status as a unified centralized country. To develop the national economy and culture, the National Bank was established in 1928 to withdraw the right to issue banknotes from the British. Then take back extraterritorial jurisdiction and tariff autonomy. In 1931, the state monopoly of trade was achieved. Before the outbreak of World War II, it was close to Germany. In 1941, British and Soviet troops entered Iran. In September of the same year, he was forced to abdicate and his son succeeded him. He died of depression in 1944.