During a Solar Eclipse and the other thing is the Corona, the Corona is Latin for crown and is the shining white part that you see around the moon during a Solar Eclipse
by lowering the cost to ship crops to market
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<span>believed in many gods
had temples and ziggurats
had myths
had own governments
all considered city-states
politically independent
city squares</span> </span>
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As it is not possible to have access to the clip, it will not be possible to promote an answer with exactness, however I will try to help you in the best possible way.
To define discussion roles in a group, we must be able to observe that each person within that group was responsible for a topic, which will be inserted into the discussion, so that each person must assume their role defending the topic to which they were assigned.