What was the root cause of the decline of the Abbasid Empire? ...

[amal]

What was the root cause of the decline of the Abbasid Empire?
 
  a. Crises in succession of caliphs.
  b. Dropping revenues.
  c. Expensive military ventures.
  d. Decline in trade from Asia.
  e. War with the Shiites.

Question 2

Northern Africa differs from the rest of the continent because of
 
  a. its trade with sub-Saharan areas.
  b. the migration of modern humans.
  c. its early complex societies.
  d. its dense rain forest.
  e. its enormous lake.

[blfontai]

Answer to Question 1

b

Answer to Question 2

a