I remember the maps changing over in the mid-Eighties. Seventies and early-Eighties all the world maps in school were centered (left to right) on Kansas, with Asia and Australia on the left, and Europe and Africa on the right. That meant there was a split somewhere in the middle-east. If you looked carefully, you could tell that the left and right edges overlapped a little bit.
In the mid-Eighties the "old" maps slowly got replaced with "international" maps with the Americas on the left and Eurasia on the right. Some grumpy old conservatives complained (yes even back then) that this was all a plot to take away American pride.