Based in the United Kingdom, Spartacus Educational was established as a book publisher in 1984 by former history teacher John Simkin and Judith Harris.

The site has the ability to provide more of a well-rounded learning experience by illustrating how the war affected people and places all over the world.

[4] According to Marilyn Elias of the Southern Poverty Law Center, speaking about the assassination of John F. Kennedy, "the site simply reproduces a host of conspiracy theories that first appeared elsewhere".

[5] Elias also describes the site as "very shoddy, not well-sourced", citing Arthur Goldwag, author of Cults, Conspiracies, and Secret Societies.

It contains free encyclopedia entries that directly connect to primary source documents, making it a perfect tool for educators looking to give students a starting point in their research.