Imagine that a historian has discovered a diary written in 1848 by another German revolutionary. Which statement best explains how this discovery could be used? It could be used to determine if a revolution took place in 1848. It could be used to explain the events of the revolution in France. It could be used to corroborate Schurz's recollection of the revolution. It could be used to prove that Schurz was not in Germany during the revolution.