Why did american farm land in the dust bowl region turn to infertile dust?

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

Why would the saudi’s oil industry need a large investment in human capital

In an economic downturn, what can happen in countries that depend on high taxes to fund social programs?