UK Agents or American Agents?

I'm wondering if being an American will hurt my chances of finding an agent in the UK. My John Dunn book has nothing to do with America. It has everything to do with the UK and the Zulus. So maybe an American writing a story about the Anglo-Zulu War is like a British person writing about the American Civil War.

But whatever. Enthusiasts come in all different nationalities. So who's to say there aren't British Civil War enthusiasts? And who's to say there aren't American Zulu War enthusiasts? It's just that I'm not sure if being an American won't be counted against me. It could be that a UK agent might be interested in repping a book about the Zulu War, but then lose interest when he or she finds out it was an American who wrote the book.

So what am I to do? Well, I'm querying American agents, too. It's just that all the books and TV shows and movies that have ever been made about the Zulus and the Zulu War have been UK publishers and UK movie makers. It's a UK thing. Which is why I'm not limiting my agent search to American agents. You can bet I'm also querying UK agents. Fingers crossed.