Rosa Parks made significant contributions to the civil rights movement by her courageous act of refusal to give up her bus seat, sparking the Montgomery Bus Boycott. This brave stand became a symbol of resistance against racial segregation, igniting widespread activism across the United States. Parks' commitment to the struggle for equality was rooted in her lifelong dedication to justice, as she actively engaged in organizing efforts within the National Association for the Advancement of Colored People (NAACP). Her actions catalyzed a collective movement that challenged the systemic oppression faced by African Americans, inspiring future generations.