>Puccini completed La fanciulla del West, based on a play by David Belasco, in 1910. This was commissioned by, and first performed at, the Metropolitan Opera in New York on 10 December 1910 with Met stars Enrico Caruso and Emmy Destinn for whom Puccini created the leading roles of Dick Johnson and Minnie. Toscanini, then the musical director of the Met, conducted. This was the first world premiere of an opera at the Met.
Dagius
https://www.cowboysindians.com/2018/10/puccinis-western-opera/
Edit:
>Puccini completed La fanciulla del West, based on a play by David Belasco, in 1910. This was commissioned by, and first performed at, the Metropolitan Opera in New York on 10 December 1910 with Met stars Enrico Caruso and Emmy Destinn for whom Puccini created the leading roles of Dick Johnson and Minnie. Toscanini, then the musical director of the Met, conducted. This was the first world premiere of an opera at the Met.
https://en.wikipedia.org/wiki/Giacomo_Puccini#La_fanciulla_del_West