You can basically write about anything with the topic of any American Space, Building that can be come up with the culture. For example, for my rough draft, I made a topic of how Korea Towns in the US have been built and why it got built in that way.
Basically, you can write about anything based on f any American Space, Building that can be come up with the culture.
But one thing to make sure; YOU HAVE TO MAKE AN ARGUMENT WITH THE TOPIC THAT YOU CHOOSE.