How could you write a long essay on Socialism but never mention Leon Trotsky one time?

Or the different ideological goals between Stalin (National) and Trotsky (International)?

Or the History of these political movements, their ideological / organizational lineage say from the early 1900s up to today...?

This is more of an academic essay on the idea of Socialism in Theory rather than a study of the system through its application over time.

At least your conclusion hit the nail on the head:

"Socialism, more than any other governmental form, seems to lend itself to Totalitarian regimes. Leaders of purely Socialist systems tend to be dictators and not freely elected."