Final answer:
Sergey Rachmaninoff was the world-famous Russian composer who made his only US trip during the opening of Carnegie Hall on May 5th, 1891.
Step-by-step explanation:
The world-famous Russian composer who made his only US trip during the opening of Carnegie Hall on May 5th, 1891 was Sergey Rachmaninoff. Rachmaninoff was a renowned composer and pianist known for his romantic compositions, such as his Piano Concerto No. 2 and Symphony No. 2.