In this excerpt, the word wonder has a
connotation
read the excerpt from "a quilt of a country."
when photographs of the faces of all those who died in the
world trade center destruction are assembled in one
place, it will be possible to trace in the skin color, the shape
of the eyes and the noses, the texture of the hair, a map of
the world. these are the representatives of a mongrel
nation that somehow, at times like this has one spirit. like
many improbable ideas, when it actually works, it's a
wonder

Answer is positive. "The word wonder has a positive connotation."

The word "wonder"  from "A Quilt of a Country" has a positive connotation.

Explanation:

Anna Quindlen in her "A Quilt of a Country" describes the unity of the American people at times of immense threat to the nation. America is the melting pot, with people from various nationalities coming for better futures and expectations away from their own countries. And with this amalgamation of diversity, there are also chances of hatred and enmity between them. But at times like the 9/11 attack of the World Trade Center, these differing nationalities all come together united against the common enemy of terrorism under the banner "humanity". Looking at the victims of the attack, it is understood that they are from different backgrounds and ethnic groups, representative of the world. But at such times, it is also the united spirit of these same nationalities that defy the odds and come back as a strong nation, fighting the common enemy. And it is this unexpected unity that makes it a wonder for the people to see, this aspect of the American people that makes it a great nation.