How did composers like George Cohan and Irving Berlin distinguish American Musical Theatre form the European-style theatre of an earlier age?

American Musical Theatre

Explanation:

George Cohan recognised as the Father of Broadway in America.  Irving Berlin (George Cohan's protege) wrote tunes with American idioms phrases and became the model for American Musical theatre and separated from the European-style theatre of an earlier period. American musical theatre evolved as a theatrical for the songs written out of Tin Pan Alley. The earliest musicals performance consisted of storylines composed of one or two songs.

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