The Yuezhi Kingdom was an ancient nomadic group that originated in the region of Central Asia, specifically around the area of modern-day Afghanistan. They are known for their significant role in the history of the Silk Road, as they facilitated trade between the East and West. The Yuezhi were originally part of the Indo-Scythian culture and later migrated into the territories of the Greco-Bactrian Kingdom. In the 2nd century BCE, the Yuezhi established the Kushan Empire, which became a powerful political and cultural force in the region. The empire played a crucial role in the spread of Buddhism, as it helped to connect various cultures and promote the exchange of ideas. The Yuezhi's influence extended across parts of modern-day India, Pakistan, and China.