Italy, Greece, Russia, and Poland.
During the period of industrialization in the United States from 1880 to 1910, there was indeed a second wave of immigration, and the countries primarily associated with this wave were Italy, Greece, Russia, and Poland. These countries were among the major sources of immigrants during that time, driven by various factors such as economic opportunities, political instability, and social conditions in their home countries. The industrialization and rapid growth of industries in the United States attracted a large influx of immigrants seeking better prospects and employment opportunities.