897. These characters are used to represent countries or regions. Do you know which ones? 中 韓 亜 阿 欧

Answer:

Some have connections to their meaning, but most are phonetic.

中  CHUU, naka - middle, medium - China (中国)

韓  KAN - Korea (韓国/朝鮮)

亜  A - rank, next, come after, Asia - Asia (亜細亜) 

阿  A, kuma, omoneru - mountain ridge, to flatter - Africa (阿弗利加)

欧  OU - Europe　(欧州)