Hello everyone!
I am currently entering my last year of undergraduate study at Purdue University. My degree involves a double major in political science and history as well as a minor in sociology. Academically my interests lie in the intersectionality of American society and the legal system. Particularly in issues surrounding citizenship including race, gender, and sexual orientation.
To add to the discussion of trying to find a focus, I agree with the advice of trying to find a common thread in your interests. That is exactly the advice I've been given and would suggest to anyone else. There's definitely no need to know the title of your thesis/dissertation but knowing an area of the world wouldn't be a bad thing.