Civil War is a major crossover event in Marvel Comics that occurred in 2006-2007. It explores the ideological conflict between superheroes and the U.S. government over the Superhuman Registration Act.
 
This legislation requires individuals with superhuman abilities to register with the government and work as licensed agents.
 
The Fantastic Four, consisting of Mr. Fantastic (Reed Richards), Invisible Woman (Susan Storm), Human Torch (Johnny Storm), and The Thing (Ben Grimm), played a significant role in the Civil War storyline. Reed Richards supported the registration act, causing a rift within the team as some members opposed the government's involvement in their superhero activities.
 
 
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