What does "Jim Crow" refer to?

Question

What does "Jim Crow" refer to?

Answer 1

Jim Crow was a fictional crippled black guy a white comedian made up. Later a dance step was named after him (Jump Jim Crow) to make fun of black people (very racistly and stereotypically I might add) and the dance and song became popular to the point where the Jim Crow laws were named after them.

Answer 2

jim crow laws.

which was segregation in all public facilities, with a "separate but equal" status for black americans and members of other non-white racial groups.

Answer 3

Laws restricting the rights of blacks, The name is derived from a minstrel show song.