Final answer:
The author's rebuttal in 'Quilt of a Country' refutes the oversimplified myth of America as just a land of opportunity, highlighting the complex history of diversity and the collaborative effort needed for true national unity.
Step-by-step explanation:
The author's rebuttal in "Quilt of a Country" addresses the complexity of American identity and unity amid diversity and historical prejudice. By acknowledging America's beginnings, which involved the disenfranchisement and labor of minorities such as Native Americans and African slaves, the author counters the myth of America as simply a land of freedom and opportunity. Moreover, the author highlights the ongoing struggle for equality and inclusion, signifying that the reality of national unity is hard-won and multifaceted, involving multiple cultures and the blending of various ideals into a common objective of liberty, equality, and human brotherhood.