It started around the 1800s; slavery was viewed as being wrong. The people who worked to abolish slavery were called abolitionists. There were several disagreement on slavery. In 1861, the civil war broke out , the North won and slavery became illegal in 1865. This was done of course thanks to President Abraham Lincoln which created the statement that freed slaves called the Emancipation Proclamation. The U.S constitution was changed, and the 13th Amendment declared that slavery would always be illegal in the United States. Even though the slave owners didn’t agree with slavery being abolished the North were able to make it illegal. Slave owners depended on slave work for money. Although many Northerners wanted the South to change, they were going to enforce it. So that’s when the two side decided to fight which settled this issue permanently. During the war President Abraham Lincoln took the time to risk telling the South what to do and he wrote the Emancipation Proclamation in 1862. Emancipation means freedom and Proclamation is a statement made by a ruler like the president. It freed slaves in the South, the looks in their faces must have been full of joy and happiness. They were no longer anyone’s property.. they were FREE at last!