Pleeese hel Which statements were a factor in the decline of Sumer?

Select all correct answers.

Sumer was located on a mountain.

As the fields of Sumer grew saltier, harvests were less plentiful.

Wars among the city-states plagued the Sumerians.

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