Kush was weakened by the loss of trade.
I believe the answer is: C. development of medieval guild towns and cities
A long with urbanisation, the centre of all economic activities were started to shifted into large cities with highly populated area. When this happen, Guild towns that established to excel at a certain economic sectors would started to established in order to gather as much talented members as possible.
Northern states who could use the lands to create colleges for all United States citizens are the ones who benefited the most from the Morrill Land Grant of 1862.
Death in the population due to the fact they are not in their natural habitat. They would eat themselves out of house and home
The Emancipation Proclamation was signed on January 1 1863 it shaped the war because it changed the legal status of slaves in the south to be free