Answer:
The cities have a much larger populations in smaller areas, which can cause more crime and overcrowding, along with pollution.
One is that we are the perfect distance therefor it is not to hot for life or to cold for life on earth
The first coordinate "29°N 98°W" is located in the following:
City: Falls City
Country: United States
Continent: North America
An for the second coordinate "19°N 99°W:"
City: Tlalnepantla
Country: Mexico
Continent: North America
A. The U.S.-Mexico border.
B. You left Texas and are now in the Federal District of Mexico.
C. It is next to Mexico City, which is both politically and economically the most important city in Mexico.
D. The Sierra Madre del Sur Mountain Range.