He was re-installed, pdq, after a very progressive parliamentary government that was reforming the country got brought down by the CIA, at which point those reforms were ended. The CIA did it on behalf of the international oil industry...as an extension of US-British policy. They did it for money. (and power...but money IS power)

Read "Confessions of an Economic Hitman" for the full story of the whole sorry affair by a man who was on the inside at the time.

Another incipient Third World democracy with nationalistic ideals was abruptly crushed by the big hand of corporate commerce, and replaced with the rule of a compliant autocrat.

Your government doesn't really run your society at all, pdq, it serves as a handmaiden to those who do run your society: Mega-Corporations. You live under a gigantic corporate oligarchy...and matter of fact, so do I. It controls Canada too. Its only purpose is to maximize profit. It will use you if you are compliant, it will crush you like a bug if you're not. The best you can hope for is that you don't get in its way.