Answer:
The high number of horrors committed in our diverse nation makes it difficult to believe in a united people.
Step-by-step explanation:
The piece "A Quilt of A Country" by Anna Quindlen is an article written after the 9/11 attack on the World Trade Center by terrorists. In her piece, Anna focused on the unity of the American people at the face of a common enemy, which has brought about the patriotism of the citizens.
The given passage is from the second paragraph of the whole article where she talks of the how it is difficult for others to try to imagine a united nation in America. She admitted that with all the numerous cases/ issues of racism, attacks, women discrimination etc, it is understandable to find others unable to believe in the unity of the American people. Since America has been often times seen with instances of all these discriminatory acts, Anna writes that "it is difficult to know how to convince them" to understand the united stand of the American people. But it is this diversity that makes them stand more united when facing a bigger and common enemy.