Stalin
Because they do not have to answer to anybody.
It was a brutal and vial time in history and it has left a dark dispare on the entire world for the slatering of many human being.
When Hitler attempted to attack Russia his armies fell to the brutal winter just as Napoleon's troops when he tried to invade.
Totalitarianism is used to describe a political philosophy that is collectivist in the extreme. Totalitarianism isn't a political philosophy in and of itself, it's more an attribute of political philosophies such as Marxism and Fascism. In a totalitarian state, individuals, families and civil society (unions, religious groups, educational institutions, hospitals etc) only have value in service and in relation to the state. In many cases the totalitarian state that will create and maintain the institutions of civil society and it will not permit any outside its control. These institutions are controlled usually through membership in the ruling party whose totalitarian philosophy directs the state. Individuals in such a state are taught to understand their lives in terms of their belonging and contributing to the state which demands their complete and ultimate loyalty. North Korea is a good example of a totalitarian state, as are most Marxist countries. Nazi Germany was also a totalitarian state. Totalitarian states are typically violent and brutal, with little in the way of freedom and human rights. A dictatorship on the other hand is rule by one person. In effect, the will of one person becomes law in a state. A state can be both totalitarian and a dictatorship and often is. North Korea is perhaps an example of this. But dictators aren't always totalitarians. They may not have any particular political philosophy. They just don't want anyone contesting their power.
Germany. Hitler invaded Russia because of their oil. The battles that took place were brutal. In Stalingrad they fought hand to hand for the city.
the Soviet Union became the worlds first communist state
Because Oliver Cromwell had declared a 'Commonwealth' - a Republic, but really a military dictatorship (less brutal than most), with himself as Lord Protector of the Realm.
Joseph Stalin took over governing Russia along with Gregori Zinoviev and Lev Kamenev. He did not assume full and absolute control until 1929.
Brutal Russian winter coupled with brave Russian patriotism
It was brutal because Stalin didn't regard human life and treated his subjects worse than slaves.
Dictatorship is a when one man rules everything, there is no other form of authority except that one person. If you defy their rules, you die or get exiled. They usually gain power forcefully or because they were voted for, but the people didn't know of the plans. Communism on the other hand is like a dictatorship, but it's a government party that controls everything, from properties to what kind of business you own. They are also less brutal than dictators.
There was no professor who did this. The World Bank and IMF essentially oversaw the re-establishment of capitalism in Russia and it was a very brutal process for the Russian people, for instance there was mass unemployment and homelessness again.