Step-by-step explanation:
Homer Plessy broke the Louisiana Separate Car Act of 1890, which mandated racial segregation in public transportation. The law required separate railway cars for white and Black passengers, and it was designed to enforce racial segregation and discrimination.
Homer Plessy, who was a mixed-race African American, bought a ticket for a first-class train compartment designated for white passengers and refused to move to the "colored" car. His intention was to challenge the law's constitutionality and bring attention to the issue of racial segregation. Plessy was arrested and charged with violating the Separate Car Act, and his case ultimately led to the landmark Supreme Court decision in Plessy v. Ferguson in 1896.
The Supreme Court upheld the Separate Car Act and established the "separate but equal" doctrine, which allowed states to impose racial segregation as long as the separate facilities were deemed equal in quality. The decision allowed for the continued enforcement of segregation and discrimination against African Americans in public accommodations, education, and other areas of life for several decades until the Civil Rights Movement successfully challenged and overturned these laws in the mid-20th century.