(1) coined a term (T) used to describe a genre of literature, but it has grown into an art form that can be applied to many fields, like you see in (2) and (3). Identify (1) and (T)

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Answer:

1. K. W Jeter
2. Steampunk version of Darth Vader from Star Wars
3. A steampunked laptop

T is obviously the term Steampunk.