NOT KNOWN FACTS ABOUT KOREA

As the mountainous area is mostly on the eastern part of the peninsula, the main rivers usually stream westwards. Two exceptions tend to be the southward-flowing Nakdong River and Seomjin River.Nevertheless the Sui Military was lured right into a trap via the famed Koguryŏ commander Ŭlchi Mundŏk, and endured a calamitous defeat in the Salsu (Ch'