Question

what was a result of increased european immigration during the second industrial revolution?
congress required multilingual schools.
asians vanished from the workforce.
city governments altered voting rules.
ethnic neighborhoods formed in cities.

Explanation:

During the Second Industrial Revolution, with increased European immigration, people of similar ethnic backgrounds often clustered together in cities, leading to the formation of ethnic neighborhoods. There is no historical evidence for Congress requiring multilingual schools due to this immigration, Asians did not vanish from the workforce, and there is no indication that city - governments altered voting rules specifically because of European immigration during this time.

Answer:

Ethnic neighborhoods formed in cities.