Why was the supreme court case plessy vs. ferguson important?

It caused desegregation through the argument of separate but equal being useless.

Explanation:

the main concern with the first draft of the articles of confederation was too much power in the state governments.

can someone me with this question:  

1) the end of the conflict between the north and the south didn’t just mark the end of a war; it marked the end of an entire way of life.” which statement best describes what this statement means?  

a) the southerners were no longer free and were controlled by the northern states.

b) the industrial economy in the north was not sustainable.

c) slavery became illegal, which changed completely the south’s labor force and the agricultural economy was destroyed.

d) the states decided to relinquish their independence and return to britain’s rule.