Here's the wiki summary for 
@Sccit, who still thinks that USA has been the "victim" when it comes to international geopolitics.  
 Mohammad Mosaddegh
Mohammad Mosaddegh was an Iranian politician, author, and lawyer who served as the 30th 
Prime Minister of Iran from 1951 to 1953, elected by the 
16th Majlis. He was a member of the 
Iranian parliament from 
1923, and served through a contentious 
1952 election into the 
17th Iranian Majlis, until his government was overthrown in the 
1953 Iran coup aided by the intelligence agencies of the United Kingdom (
MI6) and the United States (
CIA), led by 
Kermit Roosevelt Jr. His 
National Front was suppressed from the 
1954 election.
Before its removal from power, his administration introduced a range of social and political measures such as social security, land reforms and higher taxes including the introduction of taxation on the rent of land. His government's most significant policy was the 
nationalisation of the Iranian oil industry, which had been built by the British on Persian lands since 1913 through the 
Anglo-Persian Oil Company (APOC/AIOC), later known as 
British Petroleum (BP).
In the aftermath of the overthrow, 
Mohammad Reza Pahlavi returned to power, and negotiated the 
Consortium Agreement of 1954 with the British, which gave split ownership of Iranian oil production between Iran and 
western companies until 1979. Mosaddegh was imprisoned for three years, then put under 
house arrest until his death and was buried in his own home so as to prevent a political furor. In 2013, the US government formally acknowledged its role in the coup as being a part of its foreign policy initiatives, including paying protestors and bribing officials.
Mosaddegh was massively popular among the Iranian people, led the most pro-democracy party in Iranian history (the National Front, which still fights for Iranian democracy today), introduced unemployment, worker's comp, sick leave, and the end to indentured labor, taxed landlords for a special development fund to improve rural housing and public accomodations, introduced land reforms that allowed far more peasants to own their own property, and began to free Iran from colonialism and the foreign stealing of its natural resources. He was doing what he could to improve the lives of Iranian people, and the Americans/Brits had him overthrown and imprisoned solely because they wanted Iran's oil and falsely claimed he was pro-Soviet (even though he was pro-democracy and stanchly anticommunist) solely so they could put a fukking monarch back in power who would give them Iran's oil again.
THAT is why things deterorated in Iran to the point that Islamists could take over.  Under Mosaddegh, it never would have happened. 
But you think the USA was acting for "the greater good".  
