Complex sentence: Dudek married Stephanie Zuperko on September 16,1941, and they both moved to New York City in 1943, where Dudek began graduate studies in journalism and history at Columbia University, soon changing his major to literature.
Split into simpler sentences: Dudek married Stephanie Zuperko on September 16,1941, and they both moved to New York City. In 1943, Dudek began graduate studies in journalism and history at Columbia University, soon changing his major to literature.