Similarly, the defeat by the Egyptian Mamluks in 1260, at the start of Khubilai’s rule, had marked the southwestern border, just as precisely as the voluntary abandonment of Poland and Hungary had marked the northwestern point twenty years earlier. Thus, between 1242 and 1293, the Mongol expansion reached its maximum, and four battles marked the outer borders of the Mongol world—Poland, Egypt, Java, and Japan.
