Final answer:
The central idea of the excerpt is that America is a united country despite its cultural differences and divisions.
Step-by-step explanation:
The central idea of the excerpt is that America, despite its cultural differences and divisions, remains united as a country. It highlights the interwoven nature of American society, where people from different backgrounds coexist and even cooperate with each other, despite their theoretical hatred. The excerpt emphasizes that although other countries with similar divisions have split into new nations, America has managed to remain united.
Learn more about Unity in a diverse society