How was immigration connected to the economic growth of the United States during the late 19th and early 20th centuries?

Immigration was closely linked to the economic growth of the United States in the late 19th and early 20th centuries. The influx of immigrants provided a large and diverse labor force that fueled industrialization and expansion. Immigrants took on jobs in factories, mines, and construction, contributing to the rapid growth of industries. They also helped to populate and develop new regions, leading to increased agricultural production and urbanization. Overall, immigration played a significant role in driving the economic prosperity of the United States during this time period.