When I was in 7th or 8th grade, a British friend explained the difference to our class (Great Britain is an island, he said, and the United Kingdom is a nation). From the back of the room, someone wanted to know if Ireland were Little Britain.
This from National Geographic Today: About 11 percent of young citizens of the U.S. couldn't even locate the U.S. on a map. The Pacific Ocean's location was a mystery to 29 percent; Japan, to 58 percent; France, to 65 percent; and the United Kingdom, to 69 percent.
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