The document provides background information on key events and developments in the Civil Rights Movement in the United States from the post-Civil War era through the 1960s. It discusses the passage of the 13th, 14th, and 15th Amendments after the Civil War which helped establish equal protection under the law. It then outlines important Supreme Court cases like Plessy v. Ferguson, Sweatt v. Painter, and Brown v. Board of Education that challenged racial segregation. It also summarizes civil rights events and protests like the Montgomery Bus Boycott and March on Washington, as well as the passage of civil rights legislation in the 1950s-1960s that aimed to end discrimination and enforce voting rights.