How did victor herbert revamp the operetta to American?

Victor Herbert revitalized the operetta by infusing it with distinctly American themes, melodies, and styles, moving away from the European traditions that dominated the genre. He incorporated elements of American Folk Music, jazz, and popular song forms into his works, making them more relatable to American audiences. Herbert's successful shows, such as "Naughty Marietta" and "Sweethearts," showcased vibrant characters and engaging plots, ultimately helping to establish a uniquely American operetta style that celebrated the nation's cultural identity.