What is Korea known for?

In honor of my daughter leaving for South Korea today:
One item South Korea is famous for is the Ginseng.

Studies have shown and proven that Korean Ginseng, grown between the 36th and 38th Parallel is the very finest one can purchase.

Also (earlier this year), South Korea is famous for having two of the top three brands of electronic goods, such as flat-screen televisions. Those brands are LG and Samsung.

I believe another answer stated Kimchi; this is true, but Kimchi is really not as offensive as some people believe. South Korea is now exporting large quantities of Kimchi to many countries of the world.

The person probably believes it's offensive because of the Garlic? But then, Garlic is used in every country of the world.

Mushrooms are also gaining popularity and being exported in large quantities.

South Korea is also gaining popularity with clothing and clothing designs.

One item Korea will be famous for when the history books catch up is the invention of the first iron-clad ship. This event, when acknowledged, will replace the Monitor and Merriac of U.S. Civil War fame. Korea had an armored ship about 350+ years before the Civil War.