His speech on October 23, 1956 entitled: The Influence of Geography in the History of Colombia is recognized as a crucial element in historical and geographical studies of the country.
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From the Spanish Colonial era to modern times the history of Colombia has been marked by political change and instability which is reflected in its philatelic history.
There is a clear parallel between this and the National Front regime of Colombia, which followed on from La Violencia and lasted from 1958 to 1974, in which the Liberal and Conservative parties governed jointly.