The most populous country in North America (the United States) is also home to some of the largest cities in North America, but the No. 1 spot goes to Mexico City. The third-largest continent in ...

The most populous country in North America (the United States) is also home to some of the largest cities in North America, but the No. 1 spot goes to Mexico City. The third-largest continent in terms ...

U.S. residents may be surprised to learn that North America's largest city isn't NYC, but rather a metropolis south of the border. John Coletti / Getty Images ...