Which of these events occurred during the ghana empire?
a. timbuktu was developed into a center of learning.

b. islam was introduced into the west african region.

c. moroccan invaders conquered the empire.

d. a large amount of technology was developed

The answer is "B.Islam was introduced into the West African region."

Africa was the first continent, that Islam spread into out of Arabia in the mid seventh century. Right around 33% of the world's Muslim populace dwells today in the mainland. It was assessed in 2002 that Muslims establish 45% of the number of inhabitants in Africa. Islam has a vast nearness in North Africa, West Africa, the horn of Africa, the Southeast and among the minority yet noteworthy outsider populace in South Africa.  

The primary West Africans to be converted  were the tenants of the Sahara, the Berbers, and it is by and large concurred that constantly 50% of the tenth century, the Sahara had progressed toward becoming Dar al-Islam that is the nation of Islam.

all cities have a governor

all cities are in states or provnies then country

all cities have people

difference

some are rich

some are poor

some are average

the first question's answer is a.