One important advantage that primary soruces have over secondary sources is that primary sources offer a firsthand account of an event - b, which isn't the case with secondary sources. Although this leaves primary sources prone to being biased compared to secondary sources.
Answer:
A lot of what we know about the Ancient Egyptians comes from their art. From the many pieces of art they created we can learn things like what they looked like, what kind of clothes they wore, what jobs they worked, and what they considered important.
He wrote The Qur'an with the teachings the angle brought him.
C. Fur trading because they used to use the skins of animals such as beavers
