How do the feds use the states as the agents of national policy?

What were major causes of the dust bowl apex

The military dictatorship inviolently reacted to the opposition of the maya, who demanded greater rights for their native population. the genocide inresulted from a struggle between arab nomadic tribes and non-arab agricultural groups. the tutsi were the victims of genocide inat the hands of the hutu rulers.

Which of the following cultures were among the earliest known inhabitants of north america? a) mayab) incac) anasazi d) olmec