Complex sentence: The goth subculture is a contemporary worldwide subculture which began in Europe during the early 1980's, and grew in popularity as a result of the London Batcave scene, an offshoot of the post-punk genre.
Split into simpler sentences: The goth subculture is a contemporary worldwide subculture which began in Europe during the early 1980's. Which grew in popularity as a result of the London Batcave scene, an offshoot of the post-punk genre.