The Urban Areas were used to house these Immigrants and they grew larger.
They want you to know what the narrator means
Why are the Europeans shouting at Uncle Sam?
Answer:
revolution transformed economics that has been based on agriculture and handicrafts into economics based on large scale industry manufacturing and the factory system new machines new power new shoes and new waste organism industries for productive and efficient
Under the Neutrality Act of 1939, warring nations could buy weapons from
the US only if they paid cash and carried the arms on their own ships
