Halp this is a history quiz for all you history people out there

Aside from low birthrates and high death rates, what can cause a country’s population to decline

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

On the map above, areas along the coast are colored green (letter b). what type of climate do these areas have? a. arid b. semiarid c. mediterranean d. humid subtropical