Question

What is the difference between magadha and vajji

Answer 1

Government of Vajji : 
Heads of families belonging to a clan or chiefs of the clans rule over these states. It was ruled by more than 7 thousand rulers called Raja. It is also called virijji.
Government of magadha : 
They did a lot for work for mankind. They built roads and canals and enhanced river trade. they were considered to be as the most efficient rulers namely Ajatasatru , Bimbisara and more.

Answer 2

Difference between Magadha and Vajji:-

Magadha-
Out of the 16 Mahajanapadas, it was Magadha (South Bihar) who emerged as the strongest kingdom. Magadha had a large standing army. It was Magadha which first used elephants on large scale in wars. the first important ruler of the Madadha was Bimbisara who ruled in the second half of the sixth century BC. Bimbisara was succeeded by his son Ajatshatru (492-462 BC), who followed the policy of aggressive wars. the other important dynasties to rule Magadha was the Nanda dynasty, established by Mahapadma Nanda. After Nanda dynasty, the rule in Magadha was supplanted by that of the Mauryan Rulers, under whom the Magadhan empire reached the apex of glory. 
The Magadha administration was divided into judicial, executive and military functions. Villages had their own assemblies under their local chiefs called 'Gramakas'.

Vajji-
Unlike Magadha, which was a powerful monarchy, Vajji was a seat of united republic, known as 'Gana' or 'Sangha', of eight smaller kingdoms of which Licchavis, Janatrikas and Videha were also members. In Vajji, the function and administration was different. The king had continuous assemblies and meetings. The king decided and acted on any matter with the advice of the members of the assembly. Vajji consisted of many 'Janapadas', 'Gramas' (Villages) and 'Gosthas' (Groups).Eminent people were chosen from each 'Khanda' (District) as representative to the Vajji 'Gana Parishad' which we can call the 'Peoples' Council' of Vajji. These representatives were called 'Gana Mukhias'. The chairman of the council was titled 'Ganapramukha' but often he was addressed as a king although his post was neither dynastic nor hereditary.