What 국 means
The surrounding word determines the reading.
Hangul, the Korean alphabet, arranges consonants and vowels into syllable blocks. 국 records a sound, not a picture of either meaning.
Hangul was designed to make Korean writing more accessible. Its creation is documented in 1443; Hunminjeongeum, a guide to the script, explains it in 1446. These dates mark Hangul's history, not this syllable's origin.
Combination ideas
2Questions people ask
1Why does 국 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 국
국\AD6DCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

