Complex sentence: Founded in 1776, the Bolshoi is among the world's oldest ballet companies; it only achieved worldwide acclaim, however, in the early 20th century, when Moscow became the capital of Soviet Russia.
Split into simpler sentences: Founded in 1776, the Bolshoi is among the world's oldest ballet companies. It only achieved worldwide acclaim, however, in the early 20th century when Moscow became the capital of Soviet Russia.