The numbers of immigrants who entered the United States during the industrial age was in the thousands. hundreds of thousands. millions. hundreds of millions.

The correct answer is C. Millions

Explanation:

In the U. S., the industrial age began at the end of the 18th century and implied the creation of hundreds of factories in different regions of the country as agriculture was replaced by manufacture. At the same time, the growth of cities and the new opportunities in the industrial sector along with other factors attracted people from other countries and continents to the U. S. Indeed, during this period more than 12 million people mainly from Europe and Asia migrated to the United States. Also, most of the immigrants settled in cities or nearby areas as they worked in factories or similar. Thus, the number of immigrants during this period was in the millions.