Answer
The role that Tallchief's performance helped make into America's most popular ballet was the Sugarplum Fairy. Tallchief's portrayal of the role in George Balanchine's production of "The Nutcracker" in 1944 was a critical and commercial success, captivating audiences with her grace, athleticism, and technical skill. Her performance is credited with popularizing the ballet in the United States and establishing it as a beloved holiday tradition.