The author views world wars as harmful to people due to the deep divisions and conflicts they create within society.
The use of the term fault lines reveals that the author views world wars as harmful to people.
In the excerpt from "A Quilt of a Country," the author portrays world wars as dividing Americans and creating tension between different ethnic groups. The term fault lines signifies deep divisions and conflicts caused by world wars, highlighting the negative impact and harm they bring.
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