What is Jim Crow? and which Supreme Court case upheld the constitutionality of these

laws?

In the early 1830s, the white actor Thomas Dartmouth "Daddy" Rice was propelled to stardom for performing minstrel routines as the fictional "Jim Crow," a caricature of a clumsy, dimwitted black slave

Explanation:

Plessy v. Ferguson, 163 U. S. 537 (1896), was a landmark decision of the U. S. Supreme Court that upheld the constitutionality of racial segregation laws for public facilities as long as the segregated facilities were equal in quality - a doctrine that came to be known as "separate but equal".