1why were the berbers significant in
the history of west africa?
a they built great cities.
b they established trade routes and
spread islam.
c they mined the gold that was
traded for salt.
d they conquered ghana and mali.

Berbers were significant in the history of West Africa because they established trade routes and spread Islam.

Option B

Explanation:  

The tribe of Berbers first originated where present-day Morocco is. Owing to the proximity to the north-western coast of Africa, the desire for exploration led them to find new sea routes that took them too many parts of Europe.

They used these routes to enhance their trade with European countries. After the advent of Islam in the 6th century CE, the community of Berbers became the first non-Arab community to accept Islam. They then took the thought of Islam to the western and northern parts of Africa.

d. promised it other land