Complex sentence: As a peninsula bounded by the commercial waterways of Newtown Creek and the East River, it became a highly industrialized area in the 19th century, and there are a large number of abandoned warehouses and factories in the community.
Split into simpler sentences: As a peninsula bounded by the commercial waterways of Newtown Creek and the East River, it became a highly industrialized area in the 19th century. Deindustrialization has left a large number of abandoned warehouses and factories in the community.