Which one is correct
Although China is large, Corea is small.

While China is large, Corea is small.

Whereas China is large; Corea is small.

China is large. However, Corea is small.

Are they all correct?

Question

Which one is correct
Although China is large, Corea is small.

While China is large, Corea is small.

Whereas China is large; Corea is small.

China is large. However, Corea is small.

Are they all correct?

Answer

They could all be correct, except for the semicolon in the third one. (If you were to use a comma in that one, it would be fine too).

If you want to use a semicolon, you can just say "China is large; Korea is small".

Answer

The last one is correct.   Korea is the correct way to spell it..