ADVANTAGES AND DISVANTAGES OF MEGACITY

The twenty-five largest megacities, according to these criteria are

Rank	Megacity	Country	Population	Annual Growth
1	Tokyo	Japan	33,800,000	0.60%
2	Seoul	South Korea	23,900,000	1.40%
3	Mexico City	Mexico	22,900,000	2.00%
4	Delhi	India	22,400,000	4.60%
5	Mumbai (Bombay)	India	22,300,000	2.90%
6	New York City	USA	21,900,000	0.30%
7	São Paulo	Brazil	21,000,000	1.40%
8	Manila [20]	Philippines	19,200,000	2.50%
9	Los Angeles	USA	18,000,000	1.10%
10	Shanghai	China	17,900,000	2.20%
11	Osaka	Japan	16,700,000	0.15%
12	Kolkata	India	16,000,000	2.00%
13	Karachi	Pakistan	15,700,000	4.90%
14	Guangzhou	China	15,300,000	4.00%
15	Jakarta	Indonesia	15,100,000	2.00%
16	Cairo	Egypt	14,800,000	2.60%
17	Buenos Aires	Argentina	14,100,000	1.00%
18	Moscow	Russia	13,500,000	0.20%
19	Beijing	China	13,200,000	2.70%
20	Dhaka	Bangladesh	13,100,000	4.10%
21	Istanbul	Turkey	12,500,000	2.80%
21	Rio de Janeiro	Brazil	12,500,000	1.00%
21	Tehran	Iran	12,500,000	2.60%
24	London	United Kingdom	12,300,000	0.70%
25	Lagos	Nigeria	11,400,000	3.20%

Disadvantages of Megacity is quality of life can be lower than in smaller cities in terms of less living space, higher cost of living, lower quality of public services and infrastructure, etc.The desirable parts of the city to live in are often small in area and become very expensive, while a lot of the population that can't afford the desirable parts has to live in far-flung suburbs (in the West) or shantytowns (in the third world)They tend to have a large gap between rich and poor.Lots of things to do, lots of services (hospitals, clinics, theaters, museums), shops, architechture, public transportation
The advantage S offer far more options in terms of culture, nightlife, restaurants, recreation, etc. than smaller cities do. They are more environmentally efficient on a per capita basis due to public transportation and smaller living spaces.Most businesses can find every good or service they need in the area and have no need to use multiple locations.Traffic, lots of people, less natural landscapes, fast food, living is more expensive, larger polution such as global warning.