Respuesta :
According to the sentence, when new immigrants arrived in US cities in the first half of the 1800s, the problems they encountered include option A; The cities were unprepared for so many new inhabitants.
What is the term Immigrants about?
Immigrants are the people who left their original region or a place and moved to the new town or country in order to live forever and earn money.
At the time of 1800s too many immigrants were arrived in US cities. So, for that reason there was too much rush in the town.
The authorities were not well prepared at that time of how they cover the cost of living and how they can manage the crowd.
Therefore, correct option is A.
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