Complex sentence: He remained in New York until March 6,1880, when he left the company following an argument with the management; in the interim, he had briefly travelled to Philadelphia to play Frederic for the opening of Carte's Second American Company.
Split into simpler sentences: He remained in New York until March 6,1880, when he left the company following an argument with the management. In the interim, he had briefly travelled to Philadelphia to play Frederic for the opening of Carte's Second American Company.