Final answer:
Thurgood Marshall became the first African American to serve on the Supreme Court.
Step-by-step explanation:
Thurgood Marshall became the first African American to serve on the Supreme Court. Marshall was appointed to the court in 1967 by President Lyndon B. Johnson. He served on the court for 24 years, until his retirement in 1991.
Learn more about Thurgood Marshall's appointment to Supreme Court