I believe the best answer to this is "Foreign investment".
They should bring everything the person asked for and be on time.
Answer:
Megacities have an impact on public health, like contamination of water. Overpopulated places can bring diseases and a lack of health protection.
Explanation:
Megacities are the base for gas emissions that could be very dangerous for the environment. Traffic jam is getting worse day by day. Almost half of the habitant of one city spends at least one hour in the car to get to work.
