What did the girls do during the Tang and Song Dynasties?

On the graph, the bottom horizontal line represents

Along narrative poem about the heroic figure is

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire