Final answer:
Kublai Khan launched Mongol fleets against the Song Dynasty in China, attempted to invade Japan, and tried to expand into other regions such as Tibet and southwestern China.
Step-by-step explanation:
Kublai Khan launched Mongol fleets against various targets during his rule. He launched attacks against the Song Dynasty in China with the goal of conquering their territories and overthrowing their emperor. He also attempted to invade Japan but was unsuccessful due to bad weather and the inadequacy of the Mongol ships. Finally, Kublai Khan tried to expand into other regions such as Tibet and southwestern China.