Complex sentence: Throughout the 20th century, St James'Church experienced a number of threats to its historic environment, which includes Greenway's Law Courts and Hyde Park Barracks, in spite of which the buildings have survived to form an important precinct within the city.
Split into simpler sentences: Throughout the 20th century, St James'Church experienced a number of threats to its historic environment, which includes Greenway's Law Courts and Hyde Park Barracks. These buildings have survived to form an important precinct within the city.