Which of these following is a unique type of pottery found during the period of mahajanapadas?

When some janapadas became more important and powerful than others, they came to be known as ____________.

________ was a tax on crops.

____________ belonged to the last varna and were not allowed to study Vedas.

People who helped to perform burials, cremations, hunters and gatherers, were classified as ________.

The capital of Magadha was shifted from Rajgriha to ________.

Most of the kingdoms developed near ______ valley