十字軍の東方に及ぼした影響

抄録

Shen-tsung, the 6th Emperor of Sung dynasty, received two ambassadors successively from so-called the Western Regions, one sent by the Sultanate of Seljukides, and the other by the East Roman Empire. These two countries confronted keenly each other and the antagonism was the cause of Crusade. The war devastated the Middle East, resulting in a great loss of population. The Seljukides had to recruit Turkish soldiers from Central Asia to reinforce the army. Thus the pressure of Turkish people toward the east became weaken and gave a chance to the neighbour tribes of Mongolia to rise to a new power. Moreover, the Mongol could arm themselves with abundant iron weapons learning the fabricating technique of the Chinese. Taking advantage of the exhaustion of the Turkish people, the Mongol conquered at last the whole Western Regions.