How did the belief in reincarnation strengthen the caste system and provide hope for the lower class?

The system of checks and balances ensures that

Why would the rumor of a government contract change the value of this companys stock

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