The document summarizes the Montgomery Bus Boycott and its significance for the civil rights movement in the United States. It details how Rosa Parks' arrest for refusing to give up her seat to a white passenger sparked a 381-day boycott of the public bus system organized by the NAACP and led by Martin Luther King Jr. The boycott succeeded in desegregating the bus system and established King as a leader of the broader fight against racial segregation and discrimination under Jim Crow laws.