Final answer:
The statement that modern musical theatre is predominantly a product of American talent and creativity is true, though the 1980s featured prominent British imports. The American contribution to musical theatre is historically significant and continues to evolve.
Step-by-step explanation:
The statement that the modern musical theatre form is predominantly a product of American talent and creativity is true. While the 1980s saw a surge of British imports like Andrew Lloyd Webber's Cats and other 'megamusicals' such as Les Miserables and The Phantom of the Opera, these shows were part of a broader trend rather than the essence of musical theatre. America's contribution to the genre is significant, stemming from a rich history that includes the all-black musical In Dahomey, groundbreaking works like West Side Story, and cultural shifts that brought forth new and socially relevant stories like RENT. The commercialization of Broadway, although catalyzed by international hits, remains deeply rooted in American innovation and creativity.