Unless we, as parents, teach our DC things like this, of course they will unlikely know. The same with anything, at an early age we learn so much vocabualary from our family.
Before the IT age I knew most capital cities at primary age, just from a simple turnaround by hand map, also important events through encyclopedias.
Now, it's all so different and the focus on what they enjoy to a prolonged stage.
It does also does come from parents' own knowledge, beliefs, what they've got from education.
As educators we are often in disbelief at the lack of basic knowledge children have, so before being able to get on with the curriculum we have to do and are accounted for, we have to take so many steps back to teach foundation vocabulary before we even start.
No judgement, especially for none English speaking DC with different lifestyles, but teachers have the pressure of a quick whip through of the basics to then be judged by outcome of results.
Of course there are adjustments made but trying to enable every child to achieve their best means so many modifications and personal stepping in to help with this, it's just hard! Xxx