Why is the Supreme court a third branch of government?

The Supreme Court is considered a third branch of government to ensure a system of checks and balances among the legislative, executive, and judicial branches. Established by the Constitution, it interprets laws and adjudicates disputes, thus safeguarding individual rights and maintaining the rule of law. This separation of powers prevents any one branch from becoming too powerful and ensures that laws are applied fairly and consistently. Additionally, the judiciary's independence allows it to act as a critical check on the actions of the other branches.