How did the trans-saharan trade network affect west africas economy?
1. west africa expanded its ocean trade routes
2. west africa became dependent on european traders
3. west africa saw the rise of wealthy trading empires
4. west africa lost access to many of its resources

The correct answer is 3) West Africa saw the rise of wealthy trading empires

Explanation:

Trade in West Africa has been recorded since thousands of years ago. However, with the emergence of a powerful Islamic Empire in the Middle East and North Africa, Trans-Saharan trade increased considerably as traders from different parts of the continent started to trade goods.

While gold and salt were the two major trading goods, other items such as textiles and koala nuts were also major items.

By the 10th century, various powerful and rich Kingdoms emerged and their wealth was famous beyond just Africa.

for the points : )

explanation:

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.