What did john lewis do during his lifetime

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

In an industry in which there are several providers of a type of good, why can one business not charge much higher prices for their goods?

Afeature that an organism __ and reproduce in its environment is called a