The Capital City of Manila in the Philippines is over 38 square kilometres large.
Crime has also increased in the past 3 years.
A big problem is pollution.
Automobiles, dump sites and industrial waste pollute the air and the land.
Other problems are floods and daily traffic jams.
Manila has many problems.
It has a population of 1.6 million.
This means that there are nearly 43 thousand people in a square kilometre.