Top 12 largest metropolitan areas in the world by population (1950 to 2021) - YouTube
The 20 Largest Cities in the World: 2021 Edition | ArchDaily
Ranked: The 20 Most Populous Cities in the World
What is the difference between a Metropolitan and Cosmopolitan city? - Education Today News
Chart: The World's Largest Cities By Area | Statista
List of metropolitan areas in Europe - Wikipedia
The 25 Cities With the Highest Population Density in the World | TitleMax
List of cities by GDP - Wikipedia
The Most Populated Cities of the World. World Megacities - Nations Online Project
The 20 Largest Cities in the World: 2021 Edition | ArchDaily
Largest World Cities: 2014 | Newgeography.com
World's Most Affluent Metropolitan Areas: 2012 | Newgeography.com
Most U.S. unauthorized immigrants live in just 20 metro areas | Pew Research Center
The 21 Most Influential Cities in the World, According to a.T. Kearney
List of metropolitan areas in Europe
This Giant Map Shows All the Metropolitan Areas in the U.S.
The Largest Cities In The World By Population - WorldAtlas
The 10 Largest Cities In The World – Mega Cities
Map of America's 50 Largest Metropolitan Areas by Populations - Vivid Maps
Global Metro Monitor
Map: Economic Might by U.S. Metro Area
The most densely populated cities the world: Mumbai, India tops list
Top 10 Largest Metropolitan Cities In The World In 2019 – Otosection
