Mohammad Mosaddegh held government office as the Prime Minister of Iran from 1951 until 1953, when his government was overthrown in a coup d'état aided by the United States' Central Intelligence Agency and the United Kingdom's Secret Intelligence Service. An author, administrator, lawyer, and prominent parliamentarian, his administration introduced a range of progressive social and political reforms such as social security and land reforms, including taxation of the rent on land. His government's most notable policy, however, was the nationalization of the Iranian oil industry, which had been under British control since 1913 through the Anglo-Persian Oil Company (APOC/) (later British Petroleum and BP).