I NEED HELP!! PLEASE Why was January 1, 1863 called "the greatest day which is to determine the destiny not only of the American Republic, but that of the American Continent"?

At the time of the brown v. board of education decision,schools were segregated everywhere in the country.several states had laws requiring segregated schools.schools in nearly every state has been desegregated.segregation was common in the north, but not in the south.