Question: What event did the adament supporter of a leading figure of the Mexican Revolution and main leader of the peasant revolution in the state of Morelos witness when he was seven years old?
Sentence (from "Emiliano Zapata"): Emiliano Zapata Salazar (] ; 8 August 1879 – 10 April 1919) was a leading figure in the Mexican Revolution, the main leader of the peasant revolution in the state of Morelos, and the inspiration of the agrarian movement called "Zapatismo".
Relevant evidence: Yes