Why does the Middle East have a hard time having trade relationship within the region

Name three things the framers of the constitution did to keep the federal government or any part of it from becoming too powerful.

Restricting immigrants from entering a country may be based on what belief?  

Around the third week of a college class, a professor decides she’s had enough, is tired of dealing with bureaucracies, and wants out. so one day, instead of coming to class, she flies to tahiti and sells souvenirs on the beach. if this happened, the college would simply assign a substitute to finish the course. what does this tell you about the nature of the authority wielded by a professor?