Final answer:
The influx of immigrants from southern and Eastern Europe after 1800 had a significant impact on industrial workers in the U.S., filling the growing need for workers in factories, mines, and other industries.
Step-by-step explanation:
The influx of immigrants from southern and Eastern Europe after 1800 had a significant impact on industrial workers in the U.S. These immigrants brought with them new foods, customs, and religions, which added to the cultural diversity of the working class. They also filled the growing need for workers in factories, mines, and other industries. For example, Irish and German immigrants worked in factories and helped build railroads, while Italian immigrants did various jobs in agriculture, mining, and the building trades.