Greetings, 

My name is Seonwon Kim, a high school student from South Korea.

I was searching for some historical contents in the internet

Incidentally, I found some error on your website. 

I wish you correct an error, 'Sea of Japan' to ‘East Sea’ or 'East Sea/Sea of Japan'. 

Now I am going to tell why you should change them. 

'East Sea' is the popular name for a long time in East Asia. 

It has been used in Korea for over 2,000 years. 

Various old maps say that the sea between Korea and Japan is written as 'East Sea'. 

the International Hydrographic Organization also recommended that ‘marking at the same time’ if the parties fail to agree on a single name for the terrain they share. 

Therefore you should describe the sea between Korea and Japan as the “East Sea” or  “East Sea/Sea of Japan.”