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.
I believe the answer is a handful of wealthy farmers.
Tides would most likely be all over the place and unstable, and their wouldn't really be a full moon.
Answer:
1. Convergent boundaries––compressional forces
#sub-marine volcanoes
2. Divergent boundaries––tensional forces
#Deep ocean trenches
3. Transform boundaries––Shear forces
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