The cretaceous-tertiary extinction, the most famous of all the big five, has been attributed to what major event that triggered the fall of the dinosaurs?

a. an asteroid hitting the earth
b. increased competition from mammals
c. rapid growth of forests on land surfaces
d. glaciation

Supporters of using the atomic bomb at the end of world war ii believed that a japan might win the war if the bomb was not used. b americans were tired of war and the us should end it quickly. c russia was developing a bomb and the us needed to use it first. d japan was developing a bomb and the us needed to use it first.

Which action bestillustrates the process of making an interpretation? a. a historian reads a secondary source about the cold war to find out the dates and locations of important historical occurrences. important historical occurrences, b. a historian publishes a popular article about racism in 20th- century south africa but does not cite any sources. c. a historian writes a textbook designed to teach college students about the duties of a professional historian. d. a historian reads speeches by english and french leaders during world war il to differentiate between their content and tone.

How did bacon's rebellion affect relations between colonists and native americans? a. relations improved after many were disgusted by the violence of the rebellion.b. after the rebellion, colonists placed less focus on the "indian problem."c. the rebellion showed many that in order to establish better relations between colonists and native americans,  slavery  had to be legalized.d. more colonists supported an armed expansion into native american territory.