In the early 20th century, a city with a population exceeding one hundred thousand was already considered a sizable city, especially in Europe. For instance, Germany had nearly fifty cities with populations over one hundred thousand before World War I. During the same period, Russia had about seventy cities with populations exceeding one hundred thousand.
Therefore, Mbea City, with a population of over eight hundred thousand, is also a rare large city in the world. If we account for the permanent residents, the population of Mbea City should easily surpass one million.
In this way, East Africa might have a similar number of cities with populations over one million as the United States, although overall, probably still less than the U.S. Apart from the numerical difference, the population may not equal that of the U.S., considering just New York has over five million people, which is more than the combined populations of Dar es Salaam City, Mombasa City, and Harare.
