The Constitution of Sri Lanka was adopted in 1978 and serves as the supreme law of the country. It establishes the framework for the government, outlining the powers and responsibilities of the executive, legislative, and judicial branches. The Constitution also guarantees fundamental rights and freedoms to all citizens, promoting democracy and the rule of law. Amendments to the Constitution can be made, but they require a two-thirds majority in the Parliament of Sri Lanka. The document has undergone several revisions, reflecting the evolving political landscape and addressing issues such as ethnic relations and governance.