In the first quite a long time of 13th century, Genghis Khan unified the Mongolian tribes, founding the Mongolian Empire, and led them to overcome most China, Central Asia, Russia and center East. Their armies occupied an excellent element of countries in europe, too, maternity to one or more the biggest empires ever. Their cavalry items, especially their horse archers, were Genghis Khan's elite troops and handled, with tough but well coordinated expenses, striking terror for his or her enemies' hearts.