We would say the answer would be C. These words suggest that the speaker is happy to leave.
The only option that is not generally a reason why historians study societal change would be "<span>d. to estimate how long it would take to build a road system," since this requires a separate type of research. </span>
<span>C.
Slavery is justifiable and good for blacks.</span>
B) Executive Order
He federalized the national guard to enforce the law (Brown v. Board of Education).
During the Cold War, and in the past decade, U.S. policy often viewed nuclear weapons apart from the rest of the U.S. military establishment, with nuclear weapons serving to deter a global nuclear conflict with the Soviet Union or Russia.
