What are some recurring themes in contemporary world history from the time period between 1945 and 2000?

What was the main argument of plessy in plessy v. ferguson

Does anyone know the song that xxxtentacion sings and when he says "hey is your neck game sloppy' i need to know what son that is hurry

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.