What is the term used to describe the "old stone age", which began about 2.5 million years ago?

Truant officers came into use in the united states in the late 1800s. what's the role of a truant officer?

Hich explains why the constitution gave congress the power to create a system of federal courts? the constitution wanted congress to share power with the judicial branch. the constitution anticipated the need for courts lower than the supreme court. the constitution wanted congress to share power with the appellate courts. the constitution anticipated the need for courts equal to the supreme court.

My latest book, fightin’, prose short fiction, is a combination. there’s nothing about being indian in there. just stories of people. why shouldn’t i write about non-indians? i don’t have to dress anybody in feathers." how does ortiz's use of language in this excerpt set an informal tone? a. by using contractions and sentence fragments, ortiz makes this part of the interview feel more familiar and casual. c. by using the term "indian" rather than "native american," ortiz makes this part of the interview feel more combative or hostile. b. by employing first-person pronouns, ortiz makes this part of the interview more solemn and pessimistic. d. by asking a rhetorical question, ortiz makes this part of the interview objectively and intentionally funny and lighthearted.