According to fossil records, mammals select one: a. lived in the same era, the paleozoic, as reptiles, amphibians, and bony fishes. b. first appeared in the current quaternary period of the cenozoic era. c. first appeared in the same geologic era, the mesozoic, as dinosaurs. d. did not appear until the cenozoic era, after dinosaurs were extinct. e. none of the answer choices is correct.

"the plan of removing the aboriginal people who yet remain within the settled portions of the united states . . approaches its consummation. . an extensive region . . has been assigned for their permanent residence. it has been divided into districts and allotted among them. many have already removed and others are preparing to go. . " removal of southern indians to indian territory, 1835 this passage is most closely related to a) imperialism. b) the civil war. c) westward expansion. d) the french indian war.