What was one result of the large numbers of immigrants settling in the cities of the north in the mid-1800s?

The correct answer to this open question is the following.

One result of the large numbers of immigrants settling in the cities of the north in the mid-1800s was the kind of problems and confrontations between different cultural groups.

In the late 1800s, the largest number of immigrants to the United States came from Western and Northern  Europe countries such as Great Britain, Scandinavia, and Ireland. However, immigrants from Asia, especially Japan and China, started to increase during this period. Immigrants arrived in the main ports of the United States, California for Asians and New York for Europeans. They went to the larger cities where industries and fabrics were located. These place became overpopulated and culture and race problems and confrontations became an issue.

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