What problems did rapid growth pose for cities?

This rapid growth caused cities to have a lack of housing and thus overcrowded housing, unsanitary conditions, polluted water, easy dispersion of disease, increased crime rate, and fires from the new housing being made of wood and the use of kerosene heaters

Rapid growth means overpopulation, lack of food for everyone, lack of goods for everyone, the spread of disease could go much faster, prices would most likely rise due to demand

I'm pretty sure that's called a volcano