In quick of the following cases did the U. S. Supreme Court rule that separating students into public schools by race was unconstitutional?

Brown V. Board of Education

Explanation:

The decision of the Supreme Court in Brown V. Board of Education eradicated the "Separate, but equal" rule on the racial segregation of Blacks to attend public schools in America and upheld that they have equal rights regardless of colour or race to be admitted into public schools that are white-dominated.  The Supreme Court in giving its decision stated that the "Separate, but equal" principle is unconstitutional as it offends the Fourteenth Amendment I.e "the equal protection clause". That separate but equal inherently means no equality. The decision of the court, in this case, overruled the decision in Plessy v. Ferguson.

the cost of college has risen faster than inflation for many years.

the high price of student services and administration are two reasons for the rapid increase in cost.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).