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Central government - Wikipedia
Unitary state | Definition, Examples, & Facts | Britannica
The Three Branches of Government & US Government Structure
Central Government Definition, Structure & Examples - Study.com
Three Branches of Government - HISTORY
National Portal of India
Government of India - Wikipedia
Federalism: A Government System of Shared Powers - ThoughtCo
Federal government of the United States - Wikipedia
Political system - Functions, Governance, Structure | Britannica