Immigrants drove the growth of industry in many countries by providing a cheap source of labor. This was especially true during the 1800s in which of the following countries?

During the 1800s, immigrants significantly contributed to industrial growth in the United States, as they provided a large and inexpensive labor force for factories, railroads, and mines. Countries like Germany and the United Kingdom also experienced similar trends, with immigrants fueling industrial expansion by filling labor shortages and driving urbanization. This influx helped to transform economies and societies, laying the groundwork for modern industrialized nations.