Q: Relying on État second, writers such as Julio Cortázar are known for founding which literary movement? 
État second: État second (French for "Second State") refers to the state of mind into which some writers go when writing short stories. Julio Cortázar:  Known as one of the founders of the Latin American Boom, Cortázar influenced an entire generation of Spanish-speaking readers and writers in the Americas and Europe.
Latin American Boom