Answer :
Final answer:
The musical that was the longest running musical in history at that time and defied the accepted rules of commercial success is Oklahoma!
Explanation:
The subject of this question is Arts and the grade level is High School.
The musical that is being referred to in the question is Oklahoma!. This musical became the longest running musical in history at that time and defied the accepted rules of commercial success.
Oklahoma! was a massive hit, running for more than five years and offering 2,212 performances on Broadway. It also had successful national tours and international productions. The show's success can be attributed to its combination of successful elements, such as social issues, dramatic dance sequences, love triangles, and a psychological dream ballet.