The constitutional reform of 1886, carried out with the collaboration of Miguel Antonio Caro, was possibly the most outstanding political feat of Núñez. This Colombian Constitution of 1886, with some later modifications, was in effect until the proclamation of a new one in 1991, and in addition to reestablishing a strong Centralist form of government, changing the name of the country from the United States of Colombia to that of Republic of Colombia, it also reestablished the links with the Vatican, and made Catholicism the official religion, leaving education in the hands of the Catholic church. The Constitution also changed the duration of presidential terms from two to six years, left the election of the president of the Republic to the Congress, and changed the old states into Departments which would be ruled by a governor appointed by the president of the Republic, hence giving a lot of power to the president.