Final answer:
The civil rights movement gained momentum in the 1950s through events like the Brown v. Board of Education case and the murder of Emmett Till. The Montgomery bus boycott is considered a turning point in postwar American history due to its impact on unity and nonviolent resistance.
Step-by-step explanation:
The civil rights movement gained momentum in the 1950s through several important events. One notable event was the Brown v. Board of Education Supreme Court case in 1954, which declared racial segregation in public schools unconstitutional. Another important event was the murder of Emmett Till in 1955, which sparked outrage and brought attention to the violence faced by African Americans. Additionally, the formation of the Southern Christian Leadership Conference (SCLC) in 1957 was a significant development in organizing and advocating for civil rights.
The Montgomery bus boycott, which started on December 5, 1955, after Rosa Parks was arrested for refusing to give up her seat to a white person, is considered a turning point in postwar American history. This boycott lasted for 381 days and challenged the racial segregation policies on the Montgomery public transit system. Foner considers it a turning point because it showcased the power of unity, nonviolent resistance, and the emergence of Martin Luther King Jr. as a prominent leader of the Civil Rights movement.