What was the Brown v. Board of Education case about?
making public education equal for all students
opening up graduate and professional schools
changing private schools across the United States
providing opportunities for African American teachers

A. making public education equal for all students

Explanation:

In the Brown v. Board of Education case, the Brown family wanted to enroll their daughter in a public school close to their home, but the local board of education refused and told the family that they had to enroll their daughter in a segregated black school. The family then sued the board of education and stated that their segregation policy was unlawful. The court ruled in the family's favor and agreed that racial segregation in school is unconstitutional. So, public education was made equal for all students regardless of their race.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.