Federalism is a system of government in which power is divided between a central authority and various constituent units of the country. It is a form of governance in which two levels of government control the same area, and both the central government and the lesser political subdivisions have the authority to create laws, and they have some autonomy from one another. The key features of federalism include two or more tiers of government, constitutional superiority, separate judiciary, and supreme authority of the courts. In India, the Constitution originally provided for a two-tier system of government - Central Government, representing the Union of India and the State governments. Later, the third tier of federalism was added in the form of Panchayats and Municipalities. The chapter on Federalism in Class 10 Social Science focuses on the topic of Federalism, its key features, and forms, and how it impacts the functioning of Indian democracy.