Yes, it is true that linguists do not know for certain how language was developed by early humans, but they're able to determine that it started somewhere in Africa, due to human migration patterns.
Answer:
Cultural values are collective ideas about what is important, good, and desirable.
<span>Marxist lived in a world where most employees were unskilled factory workers, today that is not the case for the most part. Since the supply large, the factory owners didn't have to treat them particularly well, so Marxist predicted that they'd have the incentive to revolt and the numbers to succeed.Now, in the developed economies, most workers have significant education and skills and knowledge have been getting more important, not less.</span>
There was a series of laws and amendments passed to give them their rights, and example would be:
The right to vote
The destruction of man being enslaved do to color of skin
Etc.
But of course this stuff kept going until the late 1800`s, but finally died down
