In Northeast Asia Genghis Khan unified the nomadic tribes.
 Equally, while Genghis never conquered all of China, his grandson Kublai Khan, by completing that conquest and establishing the Yuan dynasty, is often credited with re-uniting China, and there is a great deal of Chinese artwork and literature praising Genghis as a military leader and political genius
 Outraged, Genghis Khan began planning one of his largest invasion campaigns and gathered around 100,000 soldiers (10 tumens), his most capable generals and some of his sons

