Simplify the following text for a Grade 9 native English-speaking person.
Original: Following the westward trend of the industry , in 1915 , Laemmle opened the world 's largest motion picture production facility , Universal City Studios , on a 230-acre ( 0.9 kmÂ ) converted farm just over the Cahuenga Pass from Hollywood .
Simplified: In 1915 , Laemmle opened the world 's largest motion picture production facility , Universal City Studios , on a 230-acre ( 0.9-km Â ) converted farm just over the Cahuenga Pass from Hollywood .