Explain how africa's vast mineral resources, including salt, gold, and iron impacted african trading cities

The African mineral trade allowed cultures and cities to connect and learn from each other, while it also drove them to aggression that ended in the colonization of the continent.

Explanation:

The vast mineral resources in Africa impacted them both positively and negatively. Positively in the first place because trade cities were developed in the safest settlements of different cultures. Also, because this trade helps them learn from each other's cultures as well as from foreigners from outside the continent. Nevertheless, this also brought negative effects because, in the first hand, there were wars to conquer the sources of those resources from Africans and foreigners of the continent, ending in the colonization of Africa. The trading also allowed to create trading routes to connect the continent, even though they were hit by robbers.

what are local authorities doing to fix the problem

explanation:

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.