Complex sentence: The American concert singer and actor Paul Robeson met Feffer on July 8,1943 in New York during a Jewish Anti-Fascist Committee event chaired by Albert Einstein, the largest pro-Soviet rally ever held in the United States.
Split into simpler sentences: The American concert singer and actor Paul Robeson met Feffer on July 8,1943 in New York during an event chaired by Albert Einstein. It was the largest pro-Soviet rally ever held in the United States.