From the above excerpt, it can be learned about the ancient Greeks that:
They believed the gluttony and disobedience are negative traits.
They believed that the gods punish people for acting badly.
They believed in the importance of strength in battle.
Odysseus tells about his men who ate the sheep and drank the wine until their stomach was full. After they were full the Cicones' army attacked them which was a consequence of the butcher nature of his men. Greeks had the idea that the punishment for gluttony and disobedience is sure to come. They believed that one should be brave and fearless while fighting in a battle. For them, the God was omniscient who rewarded or punished people of their dead.
Theresa and I, is the answer
<em>Corroboration </em>is the evidence that is backed up by the initial evidence. For example, a witness says that I saw a man in black coat entering the store and buying a bag. Later, the saleswoman, who is another witness testifies that she sold the bag to the man in a black coat. In this case, both witnesses confirm the situation and the evidences coincide. When there is no corroboration, there is not any available source to confirm the same information.
