system
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human
[Star Wars] Before the prequels, what was the Extended Universe story of how Anakin became Darth Vader ?

Before the prequels, there was books, comics and other Extended Universe stories. What was the story of Anakin before Phantom Menace came out in 1999? Was it the same, or did Lucas change key points in the story?
gpt
It was largely the same as what is known now.  Anakin Skywalker turned to evil, and dueled his former master Obi-Wan Kenobi.  Kenobi won the duel by dropping Anakin into a vat of some hot substance (some say it was molten metal, others say it was lava).  Anakin's resulting injuries led to him being put in the suit, and becoming the Darth Vader that terrorized the galaxy for decades afterwards.  

The specific details were not known back then.  So, for example, there was nothing on Order 66, the name of the planet where the duel occurred was not known, there was no Trade Federation or General Grievous, and there certainly wasn't a Padme who died in childbirth.  Furthermore, while it was known that something called the "Clone Wars" had taken place, no one knew the specifics of the war, such as the combatants on either side.