Answer:
in the northern and northeastern region
Explanation:
hope this helps
Commercial areas in a city are areas, districts, or neighborhoods primarily composed of commercial buildings, such as a strip malls, office parks, downtown, central business district, financial district, "Main Street", or shopping centers. Commercial activity within cities includes the buying and selling of goods and services in retail businesses, wholesale buying and selling, financial establishments, and a wide variety of uses that are broadly classified as "business." While commercial activities typically take up a relatively small amount of land, they are extremely important to a community's economy. They provide employment, facilitate the circulation of money, and often serve many other roles important to the community, such as public gathering and cultural events.
During the golden age of the Islamic empire,many advancements were made in lots of different areas.New forms of art were created,and new ways of thinking including the beginnings of the mathematics system of algebra emerged as well.
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West Coast of Africa I believe.