Yes, they have. South Korea co-hosted the tournament with Japan and actually managed to do surprisingly well, getting to 4th place after losing 1-0 to Germany in the semi-finals followed by a 3-2 defeat to Turkey in the third place play-off.
No
Korea & Japan *-*
No they have not hosted the world cup ever.
No
Yes, in 2002. South Korea and Japan hosted the world cup
no
no:(
no.
Japan and South Korea.
No it didn't.
yes
They are trying to host the 2018 World Cup. Never say never I suppose.