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>
A) the creation of medical treatments
A) The South didn't need to conquer the North to win its independence.
The South was just planning on defending itself till the North grew tired, but the North had to conquer the South to be able to reunite the Union and win the war.
Answer:
Thomson
Explanation:
Rutherford discovered the nucleus from which emerged the scientific table, nuclear fusion E.t.c
His work is the basis of the new technologies today
