How did conquering Central Asia and leaving troops to occupy the land impact the Mongols?

Conquering Central Asia allowed the Mongols to expand their empire significantly, gaining access to lucrative trade routes and resources. Leaving troops to occupy the land helped maintain control over these territories, ensuring stability and facilitating the collection of tribute. However, it also strained their military resources and led to challenges in governance, as the diverse populations required effective administration and integration into the Mongol system. Ultimately, this expansion contributed to the Mongol Empire's wealth and power, but also sowed the seeds for potential overextension.