How was the mongols' suspension of the chinese civil service exam similar to their persecution of chinese daoists during the yuan dynasty?

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

The segments shown below could form a triangle.

Why was hawaii so important to the united states & why did japan bomb pearl harbor?