<span>mobilization of the country's entire population and economy to produce the soldiers, food supplies, ammunitions and money necessary to win the war. </span>
Technically, the only way to correctly answer this question is to read the document itself but the answers pretty simple to answer without it too.
The Nile was the holy grail for the people of ancient Egypt. After all, it provided water to drink, and also water for agriculture. It also provided the Egyptians with many fertile lands that were great for farming. Because of this, they prayed to their gods all the time so that the Nile wouldn't dry out.
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>
Celsius, people in Europe would use Celsius
The enlightenment of the 18th century brought about new ways of thinking regarding religion and politics enlightenment ideas about religion and society shaped the policies of the french revolution