What were the key aspects of governance, social structures, and trade in pre-colonial Nigeria, covering various ethnic groups like the Igbo, Benin, Tiv, and Ijaw?

Here are the answers to your questions: Question 9: Decision making in a non-centralised states was vested in the E. council of elders.* Question 10: Which of the following tribes was not among non-centralised states in the pre-colonial Nigeria? A. Benin.* Question 11: The highest unit of government among the Igbo in the pre-colonial Nigeria was E. village assembly.* Question 12: The Igbo society in the pre-colonial era exchanged ____ with Efik. C. palm oil.* Question 13: Which of the following was a non-centralised state in the pre-colonial Nigeria? C. Ijaw.* Question 14: The Tiv centred their activities around a secret society called C. mbatsav.* Question 15: Oranmiyan gave birth to a son with a Benin princess called A. Erinmwinde.* Question 16: Which of the following groups managed commercial activities in the pre-colonial Igbo society? B. Arochukwu.* Question 17: The exchange of goods and services during the pre-colonial Nigeria was made possible through E. trade.* Question 18: Contacts between peoples in the pre-colonial Nigeria were influenced by the following except A. belief