Rafael Antonio Caldera Rodríguez ( ; 24 January 1916 – 24 December 2009) was a Venezuelan politician and academician who was the 46th and 51st president of Venezuela from 1969 to 1974 and again from 1994 to 1999, thus becoming the longest serving democratically elected politician to govern the country in the twentieth century. Widely acknowledged as one of the founders of Venezuela's democratic system, one of the main architects of the 1961 Constitution, and a pioneer of the Christian Democratic movement in Latin America, Caldera was President during the second period of civilian democratic rule in a country beleaguered by a history of political violence and military caudillos. Wikipedia
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