Final answer:
During the industrial age, the number of immigrants who entered the United States was in the millions, attracted by employment opportunities created by industrialization.
Step-by-step explanation:
The numbers of immigrants who entered the United States during the industrial age was in the millions. The process of industrialization in the United States attracted a significant number of immigrants seeking employment opportunities. The rise of industries and factories created a demand for cheap labor, leading to the influx of millions of immigrants from Europe, Asia, and other parts of the world. These immigrants played a crucial role in shaping the industrial economy and cultural diversity of the United States during this period.
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