Complex sentence: DPZ became a leader in the national movement called the New Urbanism, which seeks to end suburban sprawl and urban disinvestment, and has completed designs and codes for over two-hundred new towns, regional plans, and community revitalization projects.
Split into simpler sentences: DPZ became a leader in the national movement called the New Urbanism, which seeks to end suburban sprawl and urban disinvestment. The firm has completed designs and codes for over two-hundred new towns, regional plans, and community revitalization projects.