Anorth african trader traveling to west africa in 1100 ce most likely would have spread which of the following belief systems?

a. christianity
b. ancestor worship
c. islam
d. traditional african religion

When reading a textbook blank. a) it’s safe to assume that the ingot is not biased b) you should watch for fallacies in information and author bias c) you should fact check everything you read d) it is understood that academic sources are not biased