Which of the following was most likely use caused of the trend sound in The graft millions of manufacturing workers 1850 1870 and 1900 the increase in the number of immigrants to the United States the growth of industrialization of plantations and the spread of slavery

The most likely cause of the trend sound in "The Graft Millions of Manufacturing Workers" between 1850, 1870, and 1900 was the growth of industrialization. This period saw a significant increase in industrialization and the establishment of factories, which led to the need for more manufacturing workers.