Complex sentence: Bergmann's parents and grandparents, fleeing anti-Semitism, immigrated to the United States from Europe in 1914 and she was born in 1927 to a Romanian-born mother and Polish-born father in the Bronx.
Split into simpler sentences: Bergmann's parents and grandparents, fleeing anti-Semitism, immigrated to the United States from Europe in 1914. She was born in 1927 to a Romanian-born mother and Polish-born father in the Bronx.