Kansas Nebraska Act
During 1854, this act created the areas of Kansas and Nebraska causing open lands for new settlement. This act allowed them to decide whether they wanted to allow slavery within their borders or not. Once this act was passed, anti-slavery and pro-slavery supporters quickly headed to Kansas to try and affect the outcome of the first election.
Dred Scott Case
The Dred Scott Case that was decided in 1857, became a landmark decision by the U.S Supreme Court. This case involved whether or not, African Americans were considered a citizen which if they were not, meant they were not allowed to sue in the Federal court. This case caused them to rule unconstitutional, making this only the second time to happen during that era. Soon this was surpassed by both the Civil Rights Act of 1866 and the 14th amendment, allowing African Americans to be citizens.
During the Emancipation Proclamation, Abraham Lincoln first tried issuing this twice. The Emancipation Proclamation applied only to the states in rebellion. This also changed the focus of the war. When the war first started, they're main focus was to preserve the union. Now that they issued this, with the thought of freedom for slaves, it pushed them further. This made the African-Americans start fighting for their freedom. Not long till the Emancipation Proclamation led to complete abolition of slavery in the United States.
The Battle of Gettysburg was seen as the most important factors in the Civil War. General Robert E. Lee who was in charge, led his army in June 1863. Out of 120 generals, 9 were killed or severely wounded during the battle. This battle lasted 3 days and it hurt lots of people through out these 3 days.