The presence of beads made from materials like carnelian in prehistoric Bihar suggests all of the above: trade networks, artistic expression, and personal adornment.
Carnelian is a type of chalcedony, a quartz mineral. It is a reddish-brown color and is often used to make beads. Beads made from carnelian have been found in archaeological sites all over the world, including in prehistoric Bihar.
The presence of carnelian beads in Bihar suggests that there were trade networks between Bihar and other parts of the world. Carnelian is not found in Bihar, so it must have been imported from other places. This suggests that there were people in Bihar who were willing to trade for carnelian, and that there were people in other parts of the world who were willing to trade carnelian for other goods.
The presence of carnelian beads in Bihar also suggests that there was artistic expression in prehistoric Bihar. The beads were made from a variety of shapes and sizes, and they were often decorated with intricate designs. This suggests that people in prehistoric Bihar were skilled at making beads, and that they valued beauty and craftsmanship.
Finally, the presence of carnelian beads in Bihar suggests that people in prehistoric Bihar used beads for personal adornment. Beads were often worn as necklaces, bracelets, and earrings. They were also used to decorate clothing and other objects. This suggests that people in prehistoric Bihar valued beauty and fashion, and that they used beads to express themselves and their social status.
In conclusion, the presence of carnelian beads in prehistoric Bihar suggests trade networks, artistic expression, and personal adornment.