B, how much territory did the Roman Empire conquer?
King John of England was so unpopular because he collected taxes, modernized the government, and exerted his power over the Church, Scotland and Ireland.
The correct answer is C. A system of weights and measure for trade.
This is because the Harappan civilization did not establish a uniform set of weights and measures for use in trade.
As far as I am concerned Gao was not one of the Songhay Empire's major ones but I bet two answers should be acceptable in this question. I also think that you can include the third option from the scale represented above because <span>Algiers were quite far away on north so they couldn't be the part of the Songhay. </span>