Which sentence from the excerpt best reveals the context of the excerpt?
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Read the excerpt from "A Quilt of a Country."
Once these disparate parts were held together by a
common enemy, by the fault lines of world wars and the
electrified fence of communism. With the end of the
cold war there was the creeping concern that without a
focus for hatred and distrust, a sense of national
identity would evaporate, that the left side of the
hyphen-African-American, Mexican-American, Irish-
American-would overwhelm the right. And slow-
growing domestic traumas like economic unrest and
increasing crime seemed more likely to emphasize
division than community. Today the citizens of the
United States have come together once more because
of armed conflict and enemy attack.
O Once these disparate parts were held together by a
common enemy, by the fault lines of world wars and
the electrified fence of communism.
O With the end of the cold war there was the creeping
concern that without a focus for hatred and distrust,
a sense of national identity would evaporate, that the
left side of the hyphen-African-American, Mexican-
American, Irish-American would overwhelm the
right.
o And slow-growing domestic traumas like economic
unrest and increasing crime seemed more likely to
emphasize division than community.
Today the citizens of the United States have come
together once more because of armed conflict and
enemy attack.