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The spread began in the 7th to 9th century, originally brought to North Africa under the Umayyad Dynasty. Trade networks were extensive, spanning through north and west Africa which created a medium in which islam peacefully spread through the merchant class.
Answer:
For example, most Mississippi row crop production (cotton, corn, and soybeans) occurs in the relatively flat, deep alluvial soils of the Delta, which are conducive to mechanized farming. Conversely, animal production and forestry dominate on the shallower soils in the hilly sections of East and South Mississippi.