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The period in the southern United States, from the end of the American Civil War until the 1960s, in which African Americans were treated as a lower class of citizens than white people. Though there are still race-related issues today, back during Jim Crow, a black person couldn't even use the same drinking fountain as a white person!
excellent. This is a jim-dandy knife. Where'd you get it? Tom: I'll meet you at six, OK? Charlie: That'll be jim-dandy.