Answer: True
Step-by-step explanation:
The crime epidemic that occurred between 1850 and 1880 was partially due to social upheaval caused by large-scale immigration and the civil war. The influx of immigrants during this time period resulted in overcrowded living conditions, limited job opportunities, and poor working conditions. These factors contributed to social unrest, which sometimes manifested itself in the form of criminal activity. Additionally, the Civil War caused a breakdown of social order, which resulted in increased lawlessness in some areas.
However, it is also important to note that the crime epidemic was not solely due to these factors. Other factors, such as the growth of cities, the rise of organized crime, and the availability of alcohol and drugs also contributed to the increase in crime during this time period.