Final answer:
Ed Sullivan introduced The Beatles for their performance at Shea Stadium, marking a significant event in rock 'n' roll history.
Step-by-step explanation:
The Beatles, a renowned British rock band that experienced a meteoric rise in the 1960s, had a memorable performance at Shea Stadium. This event is embedded in the annals of rock 'n' roll history. Though the information provided does not directly answer who introduced The Beatles at Shea Stadium, it is a well-documented fact that Ed Sullivan was the one who introduced them to the audience that day. The concert at Shea Stadium is often seen as a landmark in the history of musical performances, showcasing the immense popularity of The Beatles and the growing impact of popular music on youth culture during the 1960s.