people have built temporary shelters without drinking water or energy
With the arrival of more people in the megacities, they have become overpopulated, running out of space to live.
the number of vehicles have been increasing and with them the pollution rates
Being a megacity, it has large production rates and large factories which pollute the air
each person wants to have their own car, so the amount of them has been increasing considerably and is reflected in the rush hour with strong stagnations