Final answer:
Rosa Parks' refusal to give up her bus seat led to her arrest, which sparked the Montgomery Bus Boycott and her becoming a symbol in the Civil Rights Movement. Her actions had a lasting effect, contributing to the end of racial segregation and discrimination in American law.
Step-by-step explanation:
The question appears to be pertaining to the historical events surrounding Rosa Parks and her significance in the Civil Rights Movement. While we do not have details on what 'Rosa did to Matt,' referencing historical context, Rosa Parks' refusal to give up her seat on a Montgomery, Alabama bus in 1955 led to her arrest, which then ignited the Montgomery Bus Boycott. As a result, Rosa Parks became a symbol of dignity and strength in the struggle to end racial segregation and is widely recognized for her role in the Civil Rights Movement.
In the broader scope of historical impacts, Rosa's refusal and subsequent actions brought a significant change in the American society and law through the Civil Rights Act of 1964 and Voting Rights Act of 1965, which were landmarks in ending legalized racial segregation and discrimination.