What were the main teachings of Buddha during mahajanapadas period?

The Buddha taught that life is full of suffering and unhappiness. This is caused because we have cravings and desires (which often cannot be fulfilled). Sometimes, even if we get what we want, we are not satisfied, and want even more (or want other things). The Buddha described this as thirst or tanha. He taught that this constant craving could be removed by following moderation in everything.He also taught people to be kind, and to respect the lives of others, including animals. He believed that the results of our actions (called karma), whether good or bad, affect us both in this life and the next. The Buddh taught in the language of the ordinary people, Prakrit, so that everybody could understand his message.He also encouraged people to think for themselves rather than to simply accept what he said.