Answer:
One theme that the author develops in this excerpt from "The Book of Unknown Americans" is the struggle of immigrants to adapt to a new culture while maintaining their own identity. Evidence of this theme can be seen in the following passage:
"I wanted to believe that we could live in this country and be a part of it, but what I was learning was that you can’t just find a place where no one knows who you are and pretend to be someone different. If you want to live somewhere, you have to become a part of it. You have to learn the language and the customs and the way of life. And even then, you still will be seen as an outsider."
Here, the narrator reflects on the challenges of fitting in and assimilating into American culture. Despite her desire to belong, she realizes that she cannot simply shed her identity and become someone else in order to fit in. The idea that immigrants must adapt to their new environment while also maintaining their own identity is a central theme throughout the book, as the characters navigate the complexities of life in a new country.