Metropolitan area research focuses on analyzing and understanding the social, economic, and environmental dynamics of large cities and their surrounding regions. This research often examines topics such as urbanization, population growth, transportation infrastructure, housing markets, income inequality, and sustainability within metropolitan areas. Additionally, researchers in this field may also investigate governance structures, public services, and quality of life indicators in metropolitan regions. Overall, metropolitan area research aims to provide insights into the unique challenges and opportunities facing urban areas and to inform policy decisions that promote inclusive and sustainable development.