And how is what you know applicable to others? Perhaps planning a tahriib is why you know all of those states. Or being an oldie who went to school in Somalia or Kenya where geography is thought in middle or high school is the reason why you knew it. Another third reason: America's movies. Fourth reason: NBA.
In either situation, there was a need on your part to know those states. But the Americans, who were born and raised in the US, don't have that need. They get everything here. Therefore, knowing other countries isn't incumbent upon them. Remember, even their football is different. They call your football soccer, and their football is your rugby. It is a whole different mindset!
