Answer:
10 years, from 1966 to 1976.
Explanation:
"The answer is Caliphate.The territory of a caliph is called a caliphate. Caliphate is an Islamic area which is believed to be the residence of the Caliph. Caliph is a person that is believed to be the religious successor of Prophet Mohammad."
Concentrated ownership of land by minority elite
B. chief examiner.
A chief examiner would be someone or something else unrelated entirely. Perhaps a police chief or a medical examiner are the closest to a "chief examiner" anything.