I became very patriotic and fearful
^How is that possible exactly?
Your essay has a number of very obvious word and grammatical essays. Did you not revise it before you posted it here?
I personally felt the content was lacking personal description, narrative and/or imagery. It is really bland and insipid, with no real life to it; the essay fails to convey you effectively.
It was not that much of an interesting read either, and I would blame your writing style to be honest.
It was fairly obvious as to which direction your essay was heading in the first few paragraphs, so there was no real excitement or interest in reading your essay. These are things you need to consider, because UChicago wants to read gripping essays, and yours, in my opinion, fails to do this.
There is no right or wrong answer to a UChicago essay generally, so if this is your way of getting caught, that is fine. However, I do strongly suggest improving your narrative or writing style to make this essay want your readers to continue reading on, rather than get bored after the first few sentences.