The answer to the given question above would be the first option. At the Hornet's Nest, Grant informed the commanders that they were to hold that position for as long as possible and it was so important that they were able to do this because <span>Grant was given time to be able to set up a defensive position in this location. Hope this helps.</span>
1: There was a surge of white collar workers
and
3:There was a jump in technological advances
Elaborate your question more about who you need the information
Like policy of each ??? What ?? Presidents !! But which presidents ?
Sorry
D). Vast empires.
Classical civilizations developed vast empires, whereas early river valley civilizations did not.