Complex sentence: It contains a Lutheran church, a celebrated gymnasium, once a monasterial school, with a fine library, and manufactures of parquet-flooring, paper and plaster of Paris, while another industry in the town is brewing.
Split into simpler sentences: It contains a Lutheran church, a celebrated gymnasium, once a monasterial school, with a fine library. Furthermore there were manufactures of parquet-flooring, paper and plaster of Paris, while another industry in the town is brewing.