What caused mongol expansion?

Mongol expansion was primarily driven by the desire for resources, trade routes, and grazing land, as well as the ambition of leaders like Genghis Khan, who unified the Mongol tribes and sought to build a vast empire. Additionally, the Mongols employed superior military tactics and organization, allowing them to conquer vast territories rapidly. The instability and fragmentation of neighboring states also facilitated their expansion, as the Mongols often capitalized on existing conflicts and weaknesses. Finally, cultural and economic exchanges through conquest helped to solidify their control and influence across Asia and into Europe.