What was the victory of the north in the first two years of the civil war?

In the first two years of the Civil War, the North achieved several significant victories, notably the Battle of Antietam in September 1862, which marked the bloodiest single-day battle in American history and provided a strategic boost for Union morale. Additionally, the capture of New Orleans in April 1862 opened up the Mississippi River to Union forces, disrupting Confederate supply lines. These victories helped to solidify Northern control over key territories and set the stage for the Emancipation Proclamation, which shifted the war's focus to include the abolition of slavery.