The Civil War began with the bombardment of Fort Sumter, leading to the Confederates' victory in the first battle at Bull Run, which rallied southern troops but created overconfidence. The document discusses the advantages and disadvantages of both the Union and the Confederacy, highlighting the North's economic strength and manpower versus the South's defensive position and skilled leadership. It also touches on the impact of the war on women and the population dynamics in the border states, which played a critical role in the conflict.