I do not think most Americans could even identify each state on a map, let alone NK.
That's a bit sad. How many hours of geography did y'all have per week from 7th-12th grade? Towards the end in highschool we had to know the locations of all countries on the globe and every country's capital city. One of the questions on our geography exam in the 6th grade literally had a blank world map and we had to fill in 50 countries or so. And all their capital cities.
At the start of each geography class our teacher would do some quick questions where we had to point out countries on the map or recite capital cities. To really drill them into our head.
Our chemistry teacher did the same. We had to learn all chemical elements and at the start of each lesson she'd test us by giving us a test with 10 to 20 element abbreviations and we had to fill in the full elements' name. They were graded too but held very little weight and weren't really considered "real" tests. It was a bit annoying but it sure helped us get all those elements stuck in our heads.