Brazil approved and promulgated Constitutional Amendment No. 4 to the 1946 Constitution, which instituted a parliamentary system of government. The amendment reorganized executive power by creating the role of President of the Council of Ministers (prime-minister-style leadership) and limiting the president’s day-to-day governing authority under the new framework. This change was part of the political settlement that enabled Vice President João Goulart to assume office amid a major constitutional crisis.
