Answer: Overproduction led to price decreases.
Explanation:
The case Plessey v. Ferguson decided that it was legal for public schools in the United States could be segregated by race. It was late overturned by Brown v. Board of ED.
Yes, in general it is true that an important characteristic of civilization is economic activity, since without economic activity it is impossible to trade and grow the economy to the extent that people can develop new skills and trades.
