Final answer:
Rosa Parks' refusal to give up her seat on a bus sparked the Montgomery Bus Boycott, a key event in the Civil Rights Movement.
Step-by-step explanation:
The word 'Rosa Parks' holds significant historical importance. Rosa Parks was an African American woman who, on December 1, 1955, refused to give up her seat to a white passenger on a city bus in Montgomery, Alabama. Her arrest sparked the Montgomery Bus Boycott, a key event in the Civil Rights Movement. The boycott lasted for 381 days and eventually led to a Supreme Court ruling that segregation on public buses was unconstitutional.