It’s B. They were the furthest north. Hope this helps.:)
It can't be D. because Alexander died suddenly, not in war. Cant be C. because he died peacefully, and it can't be A, because he only met alexander like once or twice
Improve society and address economic problems
Answer:
In 1279, Kublai became the first Mongol to rule all of China when he conquered the last of the Song loyalists. ... Despite adopting and improving on many Chinese systems and ideals, Kublai and his Mongols did not want to become Chinese – they kept many of their own customs and remained unassimilated to Chinese life