Complex sentence: The school closed after the war ended and the major businesses that were driven to the area by the war, closes, and opened again in 1954, on Van Wagenen Street and Pacific Avenue.
Split into simpler sentences: The school closed after the war ended, and as a result, the major businesses that were driven to the area by the war, closed as well. It opened again in 1954, on Van Wagenen Street and Pacific Avenue.