Among Unamuno's most outstanding contributions is the distinction between history and intrahistory. With regard to the former, the intellectual from the Basque Country added little new to what was already known at the time about the temporal expression of the events that had forged the evolution of humanity. Nevertheless, in his reflections on cultural events, synchronic and explicit, he introduced an important subject: the relationship between the small events that make up the culture of a people. This concept of the rector of Salamanca's has been almost forgotten by scholars, even though at the time it was used by some Marxist historians to apply it to their own dialectic of history and even some others redefined it with a different term, but similar in its content: that of microhistory.