In Thorin's argument, Thorin promise to give Bard one fourteenth share of the hoard in silver and gold. He was talking about to Smaug's treasure. So the agreement was the Thorin gives Bard 1/4 of the treasure. At the same time, he refused since he thinks that he owes nothing humans only because the gold belonged to the humans first.
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Answer:
It uses more vivid verbs.
It describes a different scene than sentence 1.
It lets you understand more clearly what the cat did.
Explanation: