Simplify the following text for a Grade 13 native English-speaking person.
Original: The African-American Civil Rights Movement ( 1955 â `` 1968 ) refers to the movements in the United States aimed at outlawing racial discrimination against African Americans and restoring voting rights in Southern states .
Simplified: The African-American Civil Rights Movement from 1955 â `` 1968 was a time when American history that began movements in the United States to abolish racial discrimination at African Americans .