Ihave to write a 650 word essay on the impact of sales after the sherman and clayton acts, i am finding a lot of history book descriptions of the acts but no articles on how they impacted sales.

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