Complex sentence: Filming was delayed for two years due to David O. Selznick's determination to secure Clark Gable for the role of Rhett Butler and the "search for Scarlett" led to 1,400 women being interviewed for the part.
Split into simpler sentences: Filming was delayed for two years due to David O. Selznick's determination to secure Clark Gable for the role of Rhett Butler. The "search for Scarlett" led to 1,400 women being interviewed for the part.