75. Which of the following was an accomplishment of Abraham Lincoln's presidency? *
O Freed the slaves
O Preserved the Union
O The Gettysburg Address
O All the of the above

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