umchina is a korean term meaning someone who is better at everything than you are. it literally translates as 'my mom's friend's son'.

during the korean war, 75% of north korean's air battles were actually fought by russian pilots. this was kept secret by russia, korea, and the american government to avoid war with russia.

later, the american supported the taliban in its war against russia in afghanistan, eventually driving the russians out and leaving behind a taliban trained and armed by the american government.

an average south korean is 3 inches taller than an average north korean, primarily due to better nutrition.

the printing press was invented by the koreans 200 years before gutenberg printed his bible.