The Supremo Tribunal Federal (STF) is the highest court in Brazil, responsible for upholding the country's constitution. Established in 1891, it serves as the guardian of constitutional rights and interprets laws to ensure they align with the Brazilian Constitution. The STF has the authority to review decisions made by lower courts and can declare laws unconstitutional. The court consists of eleven justices, appointed by the President of Brazil and confirmed by the Senate. Each justice serves a life term, promoting judicial independence. The STF plays a crucial role in maintaining the rule of law and protecting civil liberties in Brazil.