A childhood belief about places

I was about 6 years old at the time the Berlin wall fell and Germany became reunited. We used to get those Weekly Reader newsletters in school, and the story about Germany being unified was accompanied by a story about a kid who found out that his hometown wasn't on a map and had it changed. For some reason, I thought these two things were the same story, and for at least three years I thought that Germany had been divided into East and West because someone had made a mistake on a map.