Several key events marked Martin Luther King's life and contributed to his legacy as a civil rights leader. One of the most significant was the Montgomery Bus Boycott in 1955, which was sparked by Rosa Parks' arrest for refusing to give up her seat to a white passenger. King's leadership during this year-long boycott showcased his ability to mobilize the African American community and brought national attention to the issue of segregation. Another pivotal moment was the March on Washington for Jobs and Freedom in 1963, where King delivered his iconic 'I Have a Dream' speech, calling for racial harmony and equality. Additionally, King's involvement in the Selma to Montgomery marches in 1965 highlighted the struggle for voting rights, culminating in the Voting Rights Act of 1965. These events not only defined King's career but also significantly advanced the civil rights movement.