Answer:
D. Peaceful marches
Step-by-step explanation:
During the 1950s and 1960s, the civil rights movement developed. This movement asked for equal civil rights for all citizens, and it focused in particular on African Americans and the way their rights were limited. The movement was well-known for using peaceful strategies, such as civil disobedience and peaceful marches. Many of the rights and protections we have nowadays are a consequence of this early movement.