Final answer:
Most immigrants settled in the cities along the east coast of the United States between 1880 and 1900 because many factory jobs were available in the East.
Step-by-step explanation:
Between 1880 and 1900, most immigrants coming to the United States settled in the cities along the east coast because many factory jobs were available in the East. The new arrivals from Europe primarily moved to urban areas and found work in the growing manufacturing sector in the Northeast and around the Great Lakes. They were seeking economic opportunities and were drawn to areas where industrialization was happening.