Certainly! Here are the causes and their effects from the information provided:
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Cause: George Lucas directed and co-wrote the film "American Graffiti."
- Effect: The film became a classic coming-of-age tale and was financially successful, earning more than two hundred million dollars.
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Cause: The success of "American Graffiti."
- Effect: 20th Century Fox agreed to finance Lucas's next project.
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Cause: George Lucas's next project was "Star Wars."
- Effect: "Star Wars" was released on May 25, 1977, and became an instant box-office hit.
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Cause: The huge success of "Star Wars."
- Effect: This resulted in the production of two sequels in the original Star Wars trilogy: "The Empire Strikes Back" and "Return of the Jedi."