The American Revolutionary War would be the correct answer
The border between the North Korea and South Korea is the most aggressively contested border right now. Even though the Korean war has ended the stand off between this two countries are so evident and Korean border has been the most armed since.
I thinks its BC
hope the answer was helpful
Black death (bubonic plague) 1346-1353
Many historians might argue this point.... First modern war some consider was the Franco - Prussian war.
The massive amount of technology used.
Minnie balls, lever action guns, Gatling guns, trains, telegraph, air balloons.
North had more people, machines, and factories. They fought with one arm behind their back. Yale or Harvard had the row club all four years of the Civil War.
South had more mountains, but relied on other countries to supply their arms. Relied on cotton. Thought English would join for that reason. However, England found other countries to buy from.
I suggest watching the Ken Burns Civil War videos. Long but very informative.
