Slavery existed as a legal institution in the United States beginning in colonial times. During and after the American Revolution, things began to change. See what events took place, who was involved, and what life was like for slaves. This title offers primary sources, Fast facts and sidebars, prompts and activities, and more. Aligned to Common Core standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO..