What protest did Rosa Parks ignite in 1955?

The Montgomery Bus Boycott of 1956, a political and social protest against the racial segregation on the public transit system of Alabama, was ignited by Rosa Parks who was arrested and fined for refusing to give up her seat on the public bus for a white male.

Civil rights movement

Explanation:

On December 1, 1955, Rosa Parks refused to give up her seat to a white man on a bus in Montgomery, Alabama. Her courageous act of protest was considered the spark that ignited the Civil Rights movement.

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Im assuming its,

 The legalization of slavery led to a population that was almost fifty percent enslaved people.