I want to know the answer to the following question:
The increase in immigrants from what country in southern Europe had a notable impact on the population growth in New Haven in the early 20th century?
All the background I'm provided with is that "After the war, population grew and doubled by the start of the 20th century, most notably due to the influx of immigrants from southern Europe, particularly Italy.". Is that enough to answer the question?
Answer: yes