The Kushan Empire (c. First–Third Centuries) reached its cultural zenith circa 105 – 250 C.E., extended from Tajikistan to Afghanistan, Pakistan and into the Ganges River valley in northern India. The Kushan tribe of the Yuezhi confederation, believed to be Indo-European people from the eastern Tarim Basin, China, possibly related to the Tocharians, created the empire. They were the furthest eastern Indo-European speaking people.