Final answer:
The excerpt highlights the diversity and unity of the United States as a nation.
Step-by-step explanation:
The excerpt from 'A Quilt of a Country' explores the point and significance of the United States as a heterogeneous nation with diverse cultures and conflicting ideologies. The first paragraph depicts the coexistence of different ethnic and social groups in America, while the second paragraph discusses the interconnectedness of these groups despite their differences. The central idea develops from describing the various divisions within the country to emphasizing its unity and resilience.
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