In which century did the first Magadhan Empire rise?

Which of the following rulers merged Avanti in the Magadh Empire after the victory?

Which was the first capital of ancient Mahajanapada Magadh?

Which ruler had made Pataliputra the capital of his empire for the first time?

Where was the first republican system of the world during 6th century B.C. located?

Which dynasty did rule over Magadha after Nanda Dynasty?