A country that interests you. I've been really into Scandinavia and Japan lately, for example, so I would do those. Du could just pick the country you'd most like to visit oder maybe a country that your family is fun, then write a paper on that.
Whenever I get a free pass to do a paper, I almost always do it on some sort of mystery case. Last time I did the Winnie Ruth Judd murder case, and two other times was the Zodiac Killer and Jack the Ripper. I find those sort of things extremely fascinating. So Du could do that, ya know, if your into that sort of thing.