Slavery was primarily located in the South by 1830, where African Americans were enslaved on farms and plantations, in cities, and within homes. Slaves were considered property because they were black, and endured inhuman conditions, abuse, and punishment. Abolitionists took a moral stand against slavery and believed it was a national sin, forming organizations to help resist slavery and aid escaped slaves. Their efforts grew and became more effective over 30 years, ultimately helping to cause the Civil War and abolition of slavery.