Who knows anything about brown v. board of education?

One of the greatest supreme court decisions of the 20th century. Unaminously held that the racial segregation of chilren in public schools violated the equal protection clause of the fourteeth amendment 
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One of the main reasons why  the invasion of the byzantine empire by the turks was  significant was because that when the turks first  invaded the byzantine empire, the holy lands in the empire itself were taken over, which caused  the  pope to supply troops for the crusades.