Angola?
I love maps like this one, and a year or two ago I linked an earlier version. This one is from the Economist via Carpe Diem, and shows the name of the country whose GDP is similar in size to that of the state.
I have to criticize the map-maker, though. They used Thailand at least four times on this map -- the original version managed to do it without repeats. But I am amazed that Arizona ranks right there with Thailand. This is not to diss the rest of the state, which has a lot going for it, but in terms of population and economic activity, a huge percentage in in just one city, Phoenix.
I do have to wonder whether New Mexico being matched up with "Angola" is really very flattering, and pairing Mississippi with Bangladesh is funny on a couple of levels.