It is C agricultural and primitive
<span>Ed Stafford made history by being the first person to walk the entire length of the Amazon River. The journey by foot took him 860 days, beginning in April 2008 and ending in August 2010.</span>
Battles over succession (C) contributed to the fall of Songhai. Al-mansur in 1590 took advantage of the recent civil strife in Songali and sent army to conquer soghai and also to control trans saharan trade route. After the the Songai was defeated the empire collapsed.