A reed stylus was the main writing tool used by Mesopotamian scribes. Scribes created the wedge shapes which made cuneiform signs by pressing the stylus into a clay or wax surface.
The North had a population of 22 million people against the 9 million in the South (of whom almost half were slaves.)
The North was more industrial and produced 94 percent of the USA’s pig iron and 97 percent of its firearms. The North even had a richer, more varied agriculture than the South.
The Union had a larger navy, blocking all efforts from the Confederacy to trade with Europe.
The Confederacy hope that France and Britain would come to their aid due to their need of cotton, but these countries had enough cotton and a bigger need for Northern corn.
The North controlled both the shipping and railroad avenues, allowing them to trade and to get supplies fairly quickly.
The Union had more support: four slave states still remained loyal and not everybody in the 11 Confederate states were on the Confederate side. There were still plenty of people in the South that supported the Union.
Many slaves fled to the Union armies, providing even more manpower.
The South squandered their resources early in the war by focussing on conventional offensives instead of non-conventional raids on the Union’s transportation and communication infrastructure.
Lee’s offensive war strategy had a high cost in casualties, destroying a large part of the Confederate army.
They had weapons, their societies were separated, which made it easier for them to take over
The Best Explanation for why the Cold War is not Included in the chart Is because:
~That was not a Conventional War, and its Costs are Measured by the Individual Proxy Wars.
Hope this helps.