Match each term about cities to the correct definition. edge city metropolis megalopolis urban density a center of employment and commerce that began as a suburban commuter community Press Space to open concentration of people in a city, measured by the total number of people per square mile Press Space to open a group of densely populated metropolises that grow dependent on each other and eventually combine to form a huge urban complex Press Space to open an urban area with a large population, usually 500,000 to 1 million people Press Space to open