The line graph illustrates changes in the populations of five major cities—Tehran, Beijing, Lagos, New York City, and Moscow—from 1970 to the present. Overall, Lagos and Tehran experienced the most dramatic growth, whereas New York and Moscow saw more moderate increases. Beijing’s population rose steadily but at a slower pace compared to Lagos and Tehran.
In 1970, New York had the highest population (around 8 million), followed by Moscow (6 million), Beijing (5 million), Tehran (4 million), and Lagos (1 million). By 2000, Lagos and Tehran had surpassed Moscow, with Lagos reaching nearly 10 million and Tehran around 8 million. Meanwhile, New York’s population grew to approximately 9 million, while Moscow’s growth stagnated at 7 million.
From 2000 onwards, Lagos’s population surged dramatically, exceeding 20 million by 2020, making it the most populous city on the chart. Tehran also saw rapid growth, reaching 15 million. Beijing’s population increased steadily to 12 million, while New York and Moscow grew marginally to 10 and 8 million, respectively.
In conclusion, while all five cities experienced population growth, Lagos and Tehran expanded the most rapidly, whereas New York and Moscow had more gradual increases. This trend suggests that urbanization in developing nations has accelerated significantly in recent decades.