Um yes you did with help from the British, please attempt to educate yourself regarding the Geo-Political history of that region.
The Iran disaster begin with the 1953 coup d'état where the CIA was directly involved in the overthrow of Iran's democratically elected Prime Minister Mohammad Mosaddegh.
The British with the Americans did this (British Codename Operation Boot, American Codename Operation Ajax)
Mohammad Mosaddegh wanted to audit the books of the Anglo-Persian Oil Company (APOC) and also to reduce APOC's control of Iran's oil, APOC refused to allow this, as they would, so the Iranian Parliament voted to nationalise the Iranian oil industry and they also expelled all foreign representatives of APOC from Iran.
So of course Prime Minister Mosaddegh had to go and so Britain (MI6) and America (CIA) jointly organised the overthrowing of his Government and installed the Western Puppet Mohammad Reza Pahlavi, who had been the Shah of Iran since 1941 to not run Iran, but to just sit there and allow British and then also American oil companies to rape Iran of her oil and give the Iranian people peanuts from the profits.
A nation has a right to OWN it's OWN resources, why shouldn't Iran have nationalised it's OWN oil industry