Answer:
in large cities.
Step-by-step explanation:
During the 1800s a lot of job competition was created in the cities. Small groups of immigrants invaded cities and created competition amongst workers, especially Americans. They were willing to work almost for few pennies. That caused segregation in the cities and it was over-flooded with cheap working labor. Cities became overcrowded, and as a result they got ghettos with poor and dirty living conditions.