Thurgood marshall signed the southern manifesto was a lawyer for the naacp was the first black justice of the supreme court argued plessy v. ferguson before the supreme court

Thurgood Marshall was the first black justice of the Supreme Court.

Explanation:

Thurgood Marshall, born in 1908, was an African-American lawyer who, in 1967, became the first African-American justice of the Supreme Court. He was appointed by President Lyndon Johnson, and from his position he marked a new era of diversity and cultural acceptance that became after the Civil Rights Movement of the 1960s.

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