What northern tactic destroy morale in the south after the defeats at gettysburg and vicksburg

It was the speech Abraham Lincoln gave also known as the Gettysburg Address. It made the people realize that it was not just a collection of individual states; it was one unified nation.

Total Warfare: its best example was Sherman's March to the Sea, where his troops destroyed railroads, bridges, warehouses, crops, telegraph lines, all forms of infrastructure. It prevented sending reinforcements and supplies to Lee's troops, starving them out, and it served to weaken the morale of the serving troops, making them fear for the safety of their families back home.

social contract theory basically says that all individuals are born equal, and provided a god given right to consent to be governed. american government is based of this

thomas hobbes and john locke said that we are selfish, individualistic, and constantly at war with each other, therefore we need to be controlled. 

government is defined as the legitimate use of force to control human behavior within territorial boundaries, here comes in hobbes and locke.

hobbes takes the part about controlling human behavior. while locke takes the part of legitimate use of force, since force is not legitimate unless there is consent of the people. 

there are basically 3 goals of the government: 1) maintain order by protecting life and property. 2) providing public goods, those which are typically not provided by the public sector, such as roads and education. 3) promote equality be it political, opportunist or outcome equality. 

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.