Plessy v. Ferguson was unconstitutional because it legalised segregation.
Explanation:
Plessy vs. Ferguson was important supreme court case in which the court ruled that if the separate services offered to the blacks is equal to the ones provided to the white Americans then it doesn't violates the constitution, It couldn't be considered as a violation of the constitution. This ruling sanctioned the Jim Crows Laws that prevented the African Americans from sharing public facilities. It was unconstitutional because it allowed the segregation.
While in Brown v. Board of Education(1954) it ruled that the segregation in public schools was unconstitutional even if the segregated schools were on par with the white schools. The court upheld that segregation violated the 14th amendment.
silicate minerals are far more making more than 90% that includes feldspars, quartz and mica. additionally non- silicate make the last 10% so, that includes carbonates like. limestone,and marble,sulfates like gypsum and halides, like table salt.
Most of the work in considering and editing bills is done in A) congressional committees. These congressional committees are the first stop after a bill is introduced by a Congress member and is where most of the editing and adjustment takes place before a bill with either move on or be killed.