Habib Bourguiba that opposed Bourguibists, who favored a stepwise policy and modernism and youssefists, the conservative Arab nationalist supporters of Ben Youssef. The showdown ended with the Sfax Congress of 1955 in favor of Bourguiba. He then negotiated independence from France which he obtained on 20 March 1956. Following the country's independence, Bourguiba was appointed prime minister by king Muhammad VIII al-Amin and acted as "De facto" ruler before proclaiming the Republic, on 25 July 1957. Subsequently, he was designated Interim President of Tunisia until the enactment of a constitution and the election of a permanent president. His main priorities upon taking
Habib Bourguiba unconstitutionality of the referendum. It was in that context, that the new congress of SPD, held in Monastir on 12 September, decided to amend the constitution in order to institute life presidency for Habib Bourguiba, who obtained this title from the National Assembly on 18 March 1975. The constitutional revision added a paragraph to Article 39 specifying that "exceptionally and in consideration of the eminent services of "Supreme Commander" Habib Bourguiba to the Tunisian people that he freed from the yoke of colonialism and which he turned into a united independent modern nation, enjoying the fullness of sovereignty, the National