Control of oil sales reverted back to British Petroleum (and the Seven Sisters) after the US/UK ousted Iran's prime Minister with Operation Ajax. Not all of Mosaddegh's changes were undone as it would gave destabilized the Shah.
> Second, he wasn’t replaced with a dictator. The Shah had been in power
The Prime Minister ran the government like a modern western government, the Shah was a figurehead. What you're saying is the US and UK wanted to remove the modern parliament to revert to an older, anti-democraric, conservative, traditional government. Which is what happened, and now the Swedes and westerners are whining about the traditionalism the west foisted on Iran, now that it is no longer western aligned.
Aside from mullahs and the dictator, the CIA gave money to criminal elements in Iran to help regain western control.
The Shah was a figurehead and left for Italy. He did not want to run Iran or even go back but was convinced to by westerners. He flew back to Iran with Allen Dulles.
> had forced his father to advocated over a decade before
Forced his father to advocate? Advocate for what?