Daehan Empireball first used electricity in all of Korean history. She also had trains and telephones.
She had all clay on the Korean Peninsula, Jeju, and a very extremely small chunk of China.
Daehan Empireball existed until being raped and taken over by the Japanese Empireball, she then became a provisional government. She was part of the Japanese Empire until the end of WW2. At the end of WW2, she was split in half by Sovietball and USAball into North Koreaball and South Koreaball.