Imagine a dining room table sporting three separate floral arrangements. It might look a bit off -- like someone couldn't make a choice, and now you don't know what to look at first.
It's the same with a room that has more than one or two focal points: Where do you look? A focal point is probably a major piece -- perhaps furniture or art -- that stands out as special, bold, noticeable. It's something that draws your eye as soon as you enter the room. Limit those.
For a small room, one is perfect. For a larger room, you might be able to pull off two. Just keep in mind, the more focal points you put in a room, the less of an impact they have. You don't want your room to look like a furniture bazaar.
And with that, we come back to the idea of connectivity: When you're putting different ethnic styles into a single room, they should bear a common thread …