What is meant by federalism? Write …

Federalism is a form of  government in which the power is divided between a central authority and various constituent units of the  country.

KEY FEATURES : 
1 There are two or more levels (or tiers) of government.
2 Different tiers of government govern the same citizens, but each tier has its own jurisdiction in specific matters of legislation, taxation and administration.
3 The jurisdictions of the respective levels or tiers of government are specified in the constitution. 
4 The fundamental provisions of the constitution cannot be unilaterally changed by one level of government. Such changes require the consent of both the levels of government.
5 Courts have the power to interpret the constitution and the powers of different levels of government. 
6 Sources of revenue for each level of government are clearly specified to ensure its financial autonomy.
7 The federal system thus has dual objectives: to safeguard and promote unity of the country, while at the sametime accommodate regional diversity.