A metropolis is a large city that socially and economically dominates an urban area, often serving as a major center for commerce, culture, and innovation within a region or even a country. It typically has a high population density, a diverse economy, and a significant influence on the surrounding areas in terms of employment, services, and cultural trends. A metropolis often attracts people from smaller towns and rural areas seeking opportunities and amenities not available elsewhere. The term can also refer to the central city of a metropolitan area, which includes the city itself and its surrounding suburbs and exurbs that are economically and socially integrated with it. Metropolises play a crucial role in the global economy and are often hubs for international trade, finance, and communication.