What are some problems that cities faced as their populations grew in the late 1800s?

An influx of people meant the risk of overcrowding, which in turn meant that cities often didn’t have enough space to accommodate everyone. People living in close quarters without proper hygiene + newly or poorly developed sanitation systems = disease.

One of the main problems was the rapid growth of cities which caused problems for the low and middle class as land was taken away in mainly Britain during the Agricultural Revolution and Scientific Revolution to the Industrial Revolution.