What concept is essential to the study of economic systems?

What did the brown board of education decision do? o a it established 'separate but equal" segregation o b. it supported cultural segregation in the classroom o c. it banned racial discrimination everywhere. o d. it ruled that segregation in schools is unconstitutional

What were the economic, religious and social/political factors in the abolition of slaves

Brainliestttme : describe the following event: increase in islamic extremism in the middle east