Reza Shah Pahlavi

Reza Khan, a Cossack Brigade officer, led a coup that overthrew the Qajar government. He became Minister of War and later Prime Minister, using the military to consolidate power and suppress regional rebellions.

Reza Khan crowned himself Reza Shah Pahlavi, founding the Pahlavi dynasty. He replaced the Qajar dynasty and began a program of rapid modernization, centralization, and secularization of Iran.

Reza Shah oversaw the completion of the Trans-Iranian Railway, connecting the Caspian Sea to the Persian Gulf. The project was a major infrastructure achievement, facilitating trade and military transport, but was built with forced labor.

Britain and the Soviet Union invaded Iran to secure oil fields and supply routes. Reza Shah refused to expel German nationals, leading to his forced abdication in favor of his son Mohammad Reza Pahlavi. He was exiled to South Africa.