Complex sentence: Buildings of polite design are conceived to make a stylistic statement which go beyond their functional requirements, associated with the upper-class, and includes aesthetically driven styles as diverse as the Baroque and Arts and Crafts.
Split into simpler sentences: Buildings of polite design are conceived to make a stylistic statement which go beyond their functional requirements, and it is associated with the upper-class. Polite architecture includes aesthetically driven styles as diverse as the Baroque and Arts and Crafts.