Explain how the encounter with Manuel and the subsequent events described in paragraph 11 change Buck citing evidence from the text to support your claim in "The Call of the Wild"

In this paragraph, we learn that Buck respected authority, at least from those he was familiar with. Buck's trust in man, however, is completely broken by Manuel's actions, and his instinctual reaction is to fight back.

Buck had accepted the rope with quiet dignity. To be sure, it was an unwonted performance: but he had learned to trust in men he knew, and to give them credit for a wisdom that outreached his own. But when the ends of the rope were placed in the stranger’s hands, he growled menacingly. He had merely intimated his displeasure, in his pride believing that to intimate was to command. But to his surprise the rope tightened around his neck, shutting off his breath. In quick rage he sprang at the man, who met him halfway, grappled him close by the throat, and with a deft twist threw him over on his back. Then the rope tightened mercilessly, while Buck struggled in a fury, his tongue lolling out of his mouth and his great chest panting futilely. Never in all his life had he been so vilely treated, and never in all his life had he been so angry. But his strength ebbed, his eyes glazed, and he knew nothing when the train was flagged and the two men threw him into the baggage car.