Complex sentence: Lefkowitz was born on April 15,1943, in New York City to Jewish parents Max and Rose Lefkowitz, whose families had immigrated to the United States from Poland in the late 19th century.
Split into simpler sentences: Lefkowitz was born on April 15,1943, in New York City to Jewish parents Max and Rose Lefkowitz. Their families had immigrated to the United States from Poland in the late 19th century.