Why did khomeini take over iran

How was classical persia's extensive network of roads important to its civilization?

What event caused south carolina to secede from union in 1860

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