Ecplain two contributions of any African civilization and why they are important​

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

but equal

explanation:

plessy v. ferguson (1896) is an important us supreme court decision that kept racial segregation based on "separate but equal". however, these racially segregated trains and places were not actually equal. plessy v. ferguson (1896) was finally overturned by brown v. board of education in 1954.

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