Rosa Parks was the prominent civil rights activist who refused to give up her bus seat in Montgomery, Alabama, on December 1, 1955. Her act of civil disobedience became a pivotal moment in the American Civil Rights Movement, challenging the racial segregation laws of the time. Parks’ arrest sparked the Montgomery Bus Boycott, organized by figures like Martin Luther King Jr., which lasted for over a year and led to a Supreme Court ruling that declared segregation on public buses unconstitutional. Parks’ bravery and commitment to equality continue to inspire social justice movements today.