Since the mountainous area is mostly on the eastern Element of the peninsula, the most crucial rivers are likely to circulation westwards. Two exceptions will be the southward-flowing Nakdong River and Seomjin River.
3 of the commanderies fell or retreated westward in just a handful of many years, nevertheless the Lelang Commandery remained as a Heart of cultural and economic Trade with successive 토토 Chinese dynasties for four hundreds of years. By 313, Goguryeo annexed all of the Chinese commanderies.