A large population refers to a significant number of individuals living in a specific area, such as a country or city. This can impact various aspects of life, including resource availability, infrastructure, and social services. For example, countries like China and India have some of the largest populations in the world, which presents both opportunities and challenges. In areas with large populations, there is often increased demand for housing, transportation, and healthcare. Urban centers, such as New York City and Tokyo, experience unique pressures due to their dense populations, leading to innovations in public services and urban planning to accommodate the needs of residents.