This question is incomplete, here´s the complete question.
Read " A Quilt of a Country," by Anna Quindlen.
How did Anna Quindlen introduce what she called the “first strain of behavior” that promotes the concept of unity?
Answer: She described the Calvinist undercurrent in America
Step-by-step explanation:
Quindlen explains that there are two strains of behavior that support the concept of unity in a country with diversity in its people´s national heritage. First of all, the Calvinist undercurrent in the social psyche that craves a challenge, the desire to achieve what seems impossible, even unity in a culture born out of diversity.