Read the passage and answer the question:
"Agglomeration economies differ between habitations of different sizes. Market towns generate scale economies in marketing and distribution of agricultural inputs and outputs. Medium-sized cities present localisation economies linked to specialisation. Larger cities create urbanisation economies due to diversity, leading to innovation. Metropolitan city regions offer the benefits of localisation, urbanisation and net working. They represent a mass of interconnected economic activities, typically characterised by high productivity due to jointly-generated and mutually-reinforcing agglomeration economies. These regions act as innovators of products, processes and techniques. They drive regional and national economic growth. As gateways to national and international economies, they are exposed to powerful forces of globalization, including transportation, communication and information technologies. Metropolitan city regions around the globe engage in economic activities that are increasingly structured on national and international planes. Population densities in these regions are high.''
Which regions offer the benefits of localisation, urbanisation and net working?